A016893 a(n) = (5*n+3)^9.

19683, 134217728, 10604499373, 198359290368, 1801152661463, 10578455953408, 46411484401953, 165216101262848, 502592611936843, 1352605460594688, 3299763591802133, 7427658739644928, 15633814156853823

Offset

0,1

Links

Table of n, a(n) for n=0..12.

Index entries for linear recurrences with constant coefficients, signature (10,-45,120,-210,252,-210,120,-45,10,-1).

Formula

a(n) = 10*a(n-1)-45*a(n-2)+120*a(n-3)-210*a(n-4)+252*a(n-5)-210*a(n-6)+120*a(n-7)-45*a(n-8)+10*a(n-9)-a(n-10). - Harvey P. Dale, Dec 15 2011

Mathematica

(5*Range[0, 20]+3)^9 (* Harvey P. Dale, Dec 15 2011 *)

Crossrefs

Sequence in context: A250593 A016773 A016845 * A016953 A074152 A017025

Adjacent sequences: A016890 A016891 A016892 * A016894 A016895 A016896

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved