A099558 - OEIS

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A099558

Antidiagonal sums of the triangle A099557.

1

1, 1, 2, 3, 4, 6, 9, 14, 22, 34, 52, 79, 120, 183, 280, 429, 657, 1005, 1536, 2347, 3587, 5484, 8386, 12824, 19609, 29981, 45837, 70079, 107145, 163820, 250476, 382969, 585541, 895258, 1368795, 2092808, 3199790, 4892313, 7480094, 11436670

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OFFSET

0,3

LINKS

Table of n, a(n) for n=0..39.

FORMULA

G.f.: (1-x+x^2)/((1-x)^2-x^5).

PROG

(PARI) a(n)=polcoeff((1-x+x^2)/((1-x)^2-x^5)+x*O(x^n), n)

CROSSREFS

Sequence in context: A214041 A058355 A179041 * A018140 A256969 A005579

Adjacent sequences: A099555 A099556 A099557 * A099559 A099560 A099561

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Oct 22 2004

STATUS

approved