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A130298 A051340 * A130296. 2
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)
OFFSET

1,2

COMMENTS

Row sums = A003215: (1, 7, 19, 37, 61, 91,...). Left border = A000326: (1, 5, 12, 22, 35,...). A130299 = A130296 * A051340.

LINKS

Table of n, a(n) for n=1..55.

FORMULA

A051340 * A130296 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

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;

...

CROSSREFS

Cf. A051340, A130296, A003215, A000326.

Sequence in context: A275509 A286142 A286143 * A128116 A082153 A283944

Adjacent sequences:  A130295 A130296 A130297 * A130299 A130300 A130301

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, May 20 2007

STATUS

approved

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Last modified September 20 16:14 EDT 2017. Contains 292276 sequences.