x = 278, y = 135, rule = B3678/S34678
bbobo$b3o$4o$obobo$bobo$o$o$4o$o$$3o$oo$bbo206bo34b6oboo$o3bo143b3o15b
o41boobo27boobbobb6obo$oboo143boboo15bo42boo17bo9bob14o$4o96bo34bobboo
5boboobbo10b4o35bobobob4obo15boo3boo4b14o$4o95b3o12bo6bo12b5o3bobb5o
10bobb5obo32b4obobobo6boob4obb10obb14obobboo9bo$41bo29bo27b3o17b3o8bo
3b8obob5obo4bo3b9o30bob6obb4obobobb5obob27o11boo8bo$11bo6bo9boo11boo5b
oo8boo6boobboboo4b4o4boobboobobbobb6o9bo3booboo4bobobobb10ob5obo5bob
12o4bobo13bo5boob15obb42o4b3ob3o3boobo$8booboo7boobobobobbo9b6obobbobb
oob3obo4bob6o3bobb4obbob18obboobb3ob3ob4obob51obo4boobo3bobobobobb60ob
o3b13o$5boob3ob8obb13o3bob20obboobb18obb92obo3b11ob65ob15o$3boob6o3b
99ob63o4b94o$bb178ob96o$b275obo$bb178ob96o$3boob6o3b99ob63o4b94o$5boob
3ob8obb13o3bob20obboobb18obb92obo3b11ob65ob15o$8booboo7boobobobobbo9b
6obobbobboob3obo4bob6o3bobb4obbob18obboobb3ob3ob4obob51obo4boobo3bobob
obobb60obo3b13o$11bo6bo9boo11boo5boo8boo6boobboboo4b4o4boobboobobbobb
6o9bo3booboo4bobobobb10ob5obo5bob12o4bobo13bo5boob15obb42o4b3ob3o3boob
o$41bo29bo27b3o17b3o8bo3b8obob5obo4bo3b9o30bob6obb4obobobb5obob27o11b
oo8bo$4o95b3o12bo6bo12b5o3bobb5o10bobb5obo32b4obobobo6boob4obb10obb14o
bobboo9bo$4o96bo34bobboo5boboobbo10b4o35bobobob4obo15boo3boo4b14o$oboo
143boboo15bo42boo17bo9bob14o$o3bo143b3o15bo41boobo27boobbobb6obo$bbo
206bo34b6oboo$oo$3o$$o$4o$o$o$bobo$obobo$4o$b3o$bbobo11$36bo$31bo4boob
oo$29bobob8o6booboo$28bobb9obo3b10o$27b14obb10obo$26b29o$26b27obbo$27b
5ob20ob3o$28b4o4bo3bo3bo3bo3boboo$29boo$30bo$29boo$28b4o4bo3bo3bo3bo3b
oboo$27b5ob20ob3o$26b27obbo$26b29o$27b14obb10obo$28bobb9obo3b10o$29bob
ob8o6booboo$31bo4booboo$36bo11$bbobo$b3o$4o$obobo$bobo$o$o$4o$o$$3o$oo
$bbo206bo34b6oboo$o3bo143b3o15bo41boobo27boobbobb6obo$oboo143boboo15bo
42boo17bo9bob14o$4o96bo34bobboo5boboobbo10b4o35bobobob4obo15boo3boo4b
14o$4o95b3o12bo6bo12b5o3bobb5o10bobb5obo32b4obobobo6boob4obb10obb14obo
bboo9bo$41bo29bo27b3o17b3o8bo3b8obob5obo4bo3b9o30bob6obb4obobobb5obob
27o11boo8bo$11bo6bo9boo11boo5boo8boo6boobboboo4b4o4boobboobobbobb6o9bo
3booboo4bobobobb10ob5obo5bob12o4bobo13bo5boob15obb42o4b3ob3o3boobo$8b
ooboo7boobobobobbo9b6obobbobboob3obo4bob6o3bobb4obbob18obboobb3ob3ob4o
bob51obo4boobo3bobobobobb60obo3b13o$5boob3ob8obb13o3bob20obboobb18obb
92obo3b11ob65ob15o$3boob6o3b99ob63o4b94o$bb178ob96o$b275obo$bb178ob96o
$3boob6o3b99ob63o4b94o$5boob3ob8obb13o3bob20obboobb18obb92obo3b11ob65o
b15o$8booboo7boobobobobbo9b6obobbobboob3obo4bob6o3bobb4obbob18obboobb
3ob3ob4obob51obo4boobo3bobobobobb60obo3b13o$11bo6bo9boo11boo5boo8boo6b
oobboboo4b4o4boobboobobbobb6o9bo3booboo4bobobobb10ob5obo5bob12o4bobo
13bo5boob15obb42o4b3ob3o3boobo$41bo29bo27b3o17b3o8bo3b8obob5obo4bo3b9o
30bob6obb4obobobb5obob27o11boo8bo$4o95b3o12bo6bo12b5o3bobb5o10bobb5obo
32b4obobobo6boob4obb10obb14obobboo9bo$4o96bo34bobboo5boboobbo10b4o35bo
bobob4obo15boo3boo4b14o$oboo143boboo15bo42boo17bo9bob14o$o3bo143b3o15b
o41boobo27boobbobb6obo$bbo206bo34b6oboo$oo$3o$$o$4o$o$o$bobo$obobo$4o$
b3o$bbobo!
This is a period 1800 puffer which is the second in an infinite series
of puffers with arbitrarily larger periods.  Moving the central puffer
forwards by 120 cells increases the period by 720.  You can move the
central puffer backwards once by 120 cells to make the minimal period
puffer in the series which has period 1080.  But then the reaction is
changed slightly due to different impacts with the blobs, so you have
to run the puffer once through to get the correct central puffer shape.
This is the original arbitrarily large puffer and is a very dirty.
David I. Bell, April 1997
