A017287 a(n) = (10*n + 1)^7.

1, 19487171, 1801088541, 27512614111, 194754273881, 897410677851, 3142742836021, 9095120158391, 22876792454961, 51676101935731, 107213535210701, 207616015289871, 379749833583241, 662062621900811, 1107984764452581, 1789940649848551

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

Index entries for linear recurrences with constant coefficients, signature (8,-28,56,-70,56,-28,8,-1).

Formula

G.f.: (1 + 19487163*x + 1645191201*x^2 + 13649546515*x^3 + 23992558635*x^4 + 10232825529*x^5 + 855607987*x^6 + 4782969*x^7)/(1-x)^8. - Bruno Berselli, Jul 30 2011

Prog

(Magma) [(10*n+1)^7: n in [0..20]]; // Vincenzo Librandi, Jul 30 2011
(PARI) for(n=0, 15, print1((10*n+1)^7", ")); \\ Bruno Berselli, Jul 30 2011

Crossrefs

Sequence in context: A022248 A224627 A038683 * A017395 A017659 A348267

Adjacent sequences: A017284 A017285 A017286 * A017288 A017289 A017290

Keyword

nonn,easy

Author

N. J. A. Sloane

Extensions

More terms from Bruno Berselli, Jul 30 2011

Status

approved