A017277 a(n) = (10*n)^9.

0, 1000000000, 512000000000, 19683000000000, 262144000000000, 1953125000000000, 10077696000000000, 40353607000000000, 134217728000000000, 387420489000000000, 1000000000000000000, 2357947691000000000

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..500

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

Mathematica

(10*Range[0, 20])^9 (* Harvey P. Dale, Jun 09 2018 *)
(* Alternative: *)
LinearRecurrence[ {10, -45, 120, -210, 252, -210, 120, -45, 10, -1}, {0, 1000000000, 512000000000, 19683000000000, 262144000000000, 1953125000000000, 10077696000000000, 40353607000000000, 134217728000000000, 387420489000000000}, 20] (* Harvey P. Dale, Jun 09 2018 *)

Prog

(Magma) [(10*n)^9: n in [0..20]]; // Vincenzo Librandi, Jul 29 2011
(PARI) a(n)=(10*n)^9 \\ Charles R Greathouse IV, Jul 29 2011

Crossrefs

Sequence in context: A250600 A250864 A017181 * A017517 A204593 A017649

Adjacent sequences: A017274 A017275 A017276 * A017278 A017279 A017280

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved