

A187564


Differences between the Gullwing sequence A187220 and A147562 (UlamWarburton cellular automaton).


1



1, 2, 2, 6, 2, 6, 10, 22, 2, 6, 10, 22, 10, 30, 50, 78, 2, 6, 10, 22, 10, 30, 50, 78, 10, 30, 50, 86, 58, 142, 210, 262, 2, 6, 10, 22, 10, 30, 50, 78, 10, 30, 50, 86, 58, 142, 210, 262, 10, 30
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OFFSET

1,2


COMMENTS

Apparently the Gullwing sequence A187220 is the connection between the UlamWarburton C. A. (A147562) and the toothpick sequence A139250.
For another version with minimal differences but asynchronous see A187223.


LINKS



FORMULA



EXAMPLE

If written as a triangle begins:
1,
2,
2,6,
2,6,10,22,
2,6,10,22,10,30,50,78,
2,6,10,22,10,30,50,78,10,30,50,86,58,142,210,262,
2,6,10,22,10,30,50,78,10,30,50,86,58,142,210,262,10,30...


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



