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Search: id:A130197
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| 1, 2, 1, 5, 3, 1, 12, 8, 4, 1, 27, 20, 12, 5, 1, 58, 47, 32, 17, 6, 1, 121, 105, 79, 49, 23, 7, 1, 248, 226, 184, 228, 72, 30, 8, 1, 503, 474, 410, 312, 200, 102, 38, 9, 1, 1014, 977, 884, 722, 512, 302, 140, 47, 10, 1
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = A002064, the Cullen numbers: (1, 3, 9, 25, 65, 161, 385,...). Left border = A000325, (2^n - n) starting (1, 2, 5, 12, 27, 58,...).
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FORMULA
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A007318 * A130196 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle are:
1;
2, 1;
5, 3, 1;
12, 8, 4, 1;
27, 20, 12, 5, 1;
58, 47, 32, 17, 6, 1;
121, 105, 79, 49, 23, 7, 1;
...
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CROSSREFS
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Cf. A002064, A130196, A000325.
Sequence in context: A104731 A105728 A120095 this_sequence A106513 A054446 A047858
Adjacent sequences: A130194 A130195 A130196 this_sequence A130198 A130199 A130200
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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), May 16 2007
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