A137630 Row sums of triangle A137629.

1, 3, 5, 10, 14, 25, 33, 53, 71, 104, 135, 197, 249, 344, 441, 592, 743, 988, 1227, 1600, 1987, 2538, 3126, 3980, 4859, 6093, 7439, 9241, 11198, 13843, 16683, 20454, 24607, 29935, 35855, 43468, 51813, 62424, 74282, 89055, 105540, 126094, 148945, 177175, 208857

Offset

1,2

Links

Andrew Howroyd, Table of n, a(n) for n = 1..1000

Example

a(4) = 10 = sum of row 4 terms of triangle A137629: (7 + 2 + 0 + 1).

Prog

(PARI) \\ Needs MtxA026794 defined in A026794.
seq(n) = (MtxA026794(n)^2*vectorv(n, i, 1))~ \\ Andrew Howroyd, Sep 21 2025

Crossrefs

Cf. A026794, A137629.

Sequence in context: A394589 A281688 A078411 * A320886 A323433 A220489

Adjacent sequences: A137627 A137628 A137629 * A137631 A137632 A137633

Keyword

nonn

Author

Gary W. Adamson, Jan 31 2008

Extensions

a(15) onwards from Andrew Howroyd, Sep 21 2025

Status

approved