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A192249 1-sequence of reduction of binomial coefficient sequence B(n,4)=A000332 by x^2 -> x+1. 2
0, 5, 20, 90, 300, 930, 2610, 6900, 17295, 41605, 96660, 218145, 480225, 1034765, 2188385, 4552745, 9334760, 18892805, 37794765, 74817520, 146702410, 285169310, 549948760, 1052879110, 2002263910, 3784182685, 7110957850, 13291250220 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A192232 for definition of "k-sequence of reduction of [sequence] by [substitution]".

LINKS

Table of n, a(n) for n=1..28.

FORMULA

a(n) = 5*A192069(n).

Conjecture: G.f.: 5*x^2*(1-2*x+4*x^2-3*x^3+x^4) / ( (x-1)*(x^2+x-1)^5 ). - R. J. Mathar, May 04 2014

MATHEMATICA

(See A192248.)

CROSSREFS

Cf. A192232, A192248, A192069.

Sequence in context: A011966 A271096 A269716 * A017966 A196532 A002745

Adjacent sequences:  A192246 A192247 A192248 * A192250 A192251 A192252

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jun 27 2011

STATUS

approved

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Last modified June 5 12:47 EDT 2020. Contains 334840 sequences. (Running on oeis4.)