A017661 a(n) = (12*n + 11)^9.

2357947691, 1801152661463, 78815638671875, 1119130473102767, 8662995818654939, 45848500718449031, 186940255267540403, 630249409724609375, 1838459212420154507, 4785448563124474679, 11361656654439817571, 25004854810776297743, 51639887032560546875, 101029508532509551847

Offset

0,1

Links

Paolo Xausa, Table of n, a(n) for n = 0..10000

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). - Wesley Ivan Hurt, Feb 13 2026

Mathematica

(12Range[0, 20]+11)^9 (* Harvey P. Dale, Aug 09 2011 *)

Prog

(Magma) [(12*n + 11)^9 : n in [0..20]]; // Wesley Ivan Hurt, Feb 13 2026

Crossrefs

Sequence in context: A038685 A017289 A017397 * A384549 A307748 A131013

Adjacent sequences: A017658 A017659 A017660 * A017662 A017663 A017664

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved