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A115526
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Inverse of number triangle A115524.
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2
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1, 1, -1, 1, 0, 1, 1, 0, 1, -1, 1, -1, 0, 0, 1, 1, -1, 0, 0, 1, -1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, -1, 1, 0, 1, -1, 0, 0, 0, 0, 1, 1, 0, 1, -1, 0, 0, 0, 0, 1, -1, 1, -1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, -1, 0, 0, 1, 0, 0, 0, 0, 0, 1, -1, 1, -1, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 1, 1, -1, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 1, -1, 1, 0, 1, 0, 0, 0, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Row sums are number of zeros in binary expansion of n+2, that is, A023416(n+2) [conjecture].
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EXAMPLE
| Triangle begins
1,
1, -1,
1, 0, 1,
1, 0, 1, -1,
1, -1, 0, 0, 1,
1, -1, 0, 0, 1, -1,
1, 0, 1, 0, 0, 0, 1,
1, 0, 1, 0, 0, 0, 1, -1,
1, 0, 1, -1, 0, 0, 0, 0, 1,
1, 0, 1, -1, 0, 0, 0, 0, 1, -1,
1, -1, 0, 0, 1, 0, 0, 0, 0, 0, 1,
1, -1, 0, 0, 1, 0, 0, 0, 0, 0, 1, -1,
1, -1, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 1,
1, -1, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 1, -1,
1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1,
1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, -1,
1, 0, 1, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 1
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CROSSREFS
| Sequence in context: A113998 A070909 A115954 * A054524 A110471 A174854
Adjacent sequences: A115523 A115524 A115525 * A115527 A115528 A115529
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KEYWORD
| sign,tabl
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Jan 25 2006
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