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A187213
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Number of Q-toothpicks added at n-th stage to the structure of A187212.
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3
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0, 1, 2, 2, 4, 4, 8, 10, 8, 4, 8, 12, 12, 16, 28, 30, 16, 4, 8, 12, 12, 16, 28, 32, 20, 16, 28, 36, 40, 60, 88, 78, 32, 4, 8, 12, 12, 16, 28, 32, 20, 16, 28, 36, 40, 60, 88, 80, 36, 16, 28, 36, 40, 60, 88, 84, 56, 60, 92, 112
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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COMMENTS
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Essentially the first differences of A187212.
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LINKS
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FORMULA
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It appears that if n = 2^k - 1, for k >= 2, then a(n) = A139251(n) - 2 otherwise a(n) = A139251(n). - Omar E. Pol, Mar 30 2011
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EXAMPLE
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Contribution from Omar E. Pol, Mar 29 2011 (Start):
If written as a triangle begins:
0,
1,
2,
2,4,
4,8,10,8,
4,8,12,12,16,28,30,16,
4,8,12,12,16,28,32,20,16,28,36,40,60,88,78,32,
(End)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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