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Search: id:A134658
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| A134658 |
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Triangle read by rows, giving coefficients of extended Jacobsthal recurrence. |
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+0
4
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| 1, 2, 2, -1, 2, 3, -3, 1, 2, 4, -6, 4, -1, 2, 5, -10, 10, -5, 1, 2, 6, -15, 20, -15, 6, -1, 2, 7, -21, 35, -35, 21, -7, 1, 2, 8, -28, 56, -70, 56, -28, 8, -1, 2, 9, -36, 84, -126, 126, -84, 36, -9, 1, 2, 10, -45, 120, -210, 252, -210, 120, -45, 10, -1, 2
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Sequence identical to half its p-th differences from the second term..
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EXAMPLE
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Triangle (no first line):
1, 2; see A001045
2, -1, 2; see A007910
3, -3, 1, 2; see A097119
4, -6, 4, -1, 2;
...
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CROSSREFS
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Sequence in context: A129710 A070680 A054711 this_sequence A106580 A165915 A043276
Adjacent sequences: A134655 A134656 A134657 this_sequence A134659 A134660 A134661
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KEYWORD
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sign,tabf
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Feb 01 2008
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