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Search: id:A131767
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| 1, 1, 1, 1, 3, 1, 1, 5, 4, 1, 1, 7, 9, 6, 1, 1, 9, 16, 17, 7, 1, 1, 11, 25, 36, 24, 9, 1, 1, 13, 36, 65, 60, 36, 10, 1, 1, 15, 49, 106, 125, 102, 46, 12, 1, 1, 17, 64, 161, 231, 237, 148, 62, 13, 1
(list; table; graph; listen)
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OFFSET
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0,5
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COMMENT
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Row sums = A027934: (1, 2, 5, 11, 24, 51, 107,...).
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FORMULA
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2*A007318 - A065941 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
1, 1;
1, 3, 1;
1, 5, 4, 1;
1, 7, 9, 6, 1;
1, 9, 16, 17, 7, 1;
1, 11, 25, 36, 24, 9, 1;
...
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CROSSREFS
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Cf. A007318, A065941, A027934.
Sequence in context: A131247 A114278 A134836 this_sequence A026780 A026703 A122917
Adjacent sequences: A131764 A131765 A131766 this_sequence A131768 A131769 A131770
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 13 2007
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