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A187564
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Differences between the Gullwing sequence A187220 and A147562 (Ulam-Warburton cellular automaton).
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1
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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
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1,2
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COMMENTS
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Apparently the Gullwing sequence A187220 is the connection between the Ulam-Warburton C. A. (A147562) and the toothpick sequence A139250.
For another version with minimal differences but asynchronous see A187223.
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LINKS
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FORMULA
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EXAMPLE
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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...
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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