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Search: id:A131060
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| 1, 1, 1, 1, 4, 1, 1, 7, 7, 1, 1, 10, 16, 10, 1, 1, 13, 28, 28, 13, 1, 1, 16, 43, 58, 43, 16, 1, 1, 19, 61, 103, 103, 61, 19, 1
(list; table; graph; listen)
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OFFSET
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1,5
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COMMENT
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Row sums = A097813: (1, 2, 6, 16, 38, 84, 178,...).
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FORMULA
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3*A007318 - 2*A000012 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, 4, 1;
1, 7, 7, 1;
1, 10, 16, 10, 1;
1, 13, 28, 28, 13, 1;
1, 16, 43, 58, 43, 16, 1;
...
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CROSSREFS
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Cf. A109128, A131061, A131062, A131063, A131064, A131065, A131066.
Sequence in context: A010321 A046550 A016521 this_sequence A124376 A047671 A081577
Adjacent sequences: A131057 A131058 A131059 this_sequence A131061 A131062 A131063
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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), Jun 13 2007
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