A017228 a(n) = (9*n + 5)^8.

390625, 1475789056, 78310985281, 1099511627776, 7984925229121, 39062500000000, 146830437604321, 457163239653376, 1235736291547681, 2992179271065856, 6634204312890625, 13685690504052736, 26584441929064321, 49077072127303936, 86730203469006241, 147578905600000000, 242935032749128801

Offset

0,1

Links

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

Index entries for linear recurrences with constant coefficients, signature (9,-36,84,-126,126,-84,36,-9,1).

Mathematica

(9*Range[0, 20] + 5)^8 (* Paolo Xausa, Dec 12 2025 *)
LinearRecurrence[{9, -36, 84, -126, 126, -84, 36, -9, 1}, {390625, 1475789056, 78310985281, 1099511627776, 7984925229121, 39062500000000, 146830437604321, 457163239653376, 1235736291547681}, 20] (* Harvey P. Dale, Mar 29 2026 *)

Prog

(Magma) [(9*n+5)^8: n in [0..20]]; // Vincenzo Librandi, Jul 24 2011

Crossrefs

Sequence in context: A016976 A017048 A017132 * A017336 A017456 A017588

Adjacent sequences: A017225 A017226 A017227 * A017229 A017230 A017231

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved