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A089514 Fourth column of triangle A089504. 3
1, 210, 31356, 4150440, 521757936, 64043874720, 7771495098816, 937759335004800, 112842062355914496, 13559707534436743680, 1628284591773850622976, 195461334300256627599360 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Convolution of A089513 with powers of 120.

LINKS

Table of n, a(n) for n=0..11.

FORMULA

G.f.: 1/((1-3*2*1*x)*(1-4*3*2*x)*(1-5*4*3*x)*(1-6*5*4*x)).

a(n) = A089504(n+4, 4), n>=0.

a(n) = (1350*(6*5*4)^n - 950*(5*4*3)^n + 114*(4*3*2)^n - (3*2*1)^n)/513.

CROSSREFS

Cf. A089505, A089513.

Sequence in context: A092711 A187308 A229754 * A289328 A014979 A275458

Adjacent sequences:  A089511 A089512 A089513 * A089515 A089516 A089517

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Dec 01 2003

STATUS

approved

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Last modified November 18 02:20 EST 2019. Contains 329243 sequences. (Running on oeis4.)