A017251 a(n) = (9*n+7)^7.

823543, 268435456, 6103515625, 52523350144, 271818611107, 1028071702528, 3142742836021, 8235430000000, 19203908986159, 40867559636992, 80798284478113, 150363025899136, 266001988046875, 450766669594624, 736141813551277, 1164175380274048, 1789940649848551, 2684354560000000

Offset

0,1

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).

Mathematica

(9*Range[0, 20] + 7)^7 (* Paolo Xausa, Dec 12 2025 *)

Prog

(Magma) [(9*n+7)^7: n in [0..30]]; // Vincenzo Librandi, Jul 27 2011

Crossrefs

Sequence in context: A016927 A016987 A017155 * A017359 A017479 A017611

Adjacent sequences: A017248 A017249 A017250 * A017252 A017253 A017254

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved