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A026965 a(n) = Sum_{k=0..n} (k+1) * A026626(n,k). 0
1, 3, 10, 25, 66, 154, 360, 810, 1810, 3982, 8700, 18850, 40614, 87030, 185680, 394570, 835578, 1763998, 3713700, 7798770, 16340302, 34166086, 71303160, 148548250, 308980386, 641728494, 1330992460, 2757055810, 5704253430 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..28.

FORMULA

Empirical g.f.: (3*x^7-2*x^6-5*x^5+3*x^4-x^3-x+1) / ((x-1)^2*(x+1)^2*(2*x-1)^2). - Colin Barker, Apr 26 2015

CROSSREFS

Sequence in context: A089100 A089117 A176610 * A130783 A026975 A296668

Adjacent sequences:  A026962 A026963 A026964 * A026966 A026967 A026968

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 26 06:11 EDT 2020. Contains 338027 sequences. (Running on oeis4.)