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1, 5, 2, 12, 4, 3, 22, 6, 5, 4, 35, 8, 7, 6, 5, 51, 10, 9, 8, 7, 6, 70, 12, 11, 10, 9, 8, 7, 92, 14, 13, 12, 11, 10, 9, 8, 117, 16, 15, 14, 13, 12, 11, 10, 9, 145, 18, 17, 16, 15, 14, 13, 12, 11, 10
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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Row sums = A003215: (1, 7, 19, 37, 61, 91, ...).
Left border = A000326: (1, 5, 12, 22, 35, ...).
A130299 = A130296 * A051340.
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LINKS
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Table of n, a(n) for n=1..55.
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FORMULA
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A051340 * A130296 as infinite lower triangular matrices.
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EXAMPLE
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First few rows of the triangle:
1;
5, 2;
12, 4, 3;
22, 6, 5, 4;
35, 8, 7, 6, 5;
51, 10, 9, 8, 7, 6;
70, 12, 11, 10, 9, 8, 7;
...
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CROSSREFS
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Cf. A051340, A130296, A003215, A000326.
Sequence in context: A275509 A286142 A286143 * A128116 A082153 A283944
Adjacent sequences: A130295 A130296 A130297 * A130299 A130300 A130301
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson, May 20 2007
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STATUS
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approved
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