A024144 a(n) = 12^n - n^4.

1, 11, 128, 1647, 20480, 248207, 2984688, 35829407, 429977600, 5159773791, 61917354224, 743008356047, 8916100427520, 106993205350511, 1283918464510448, 15407021574535743, 184884258894970880

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..300

Index entries for linear recurrences with constant coefficients, signature (17,-70,130,-125,61,-12).

Prog

(Magma) [12^n-n^4: n in [0..20]]; // Vincenzo Librandi, Jul 01 2011
(PARI) a(n)= 12^n-n^4 \\ Charles R Greathouse IV, Jul 01 2011

Crossrefs

Sequence in context: A168327 A282042 A015601 * A201877 A015602 A259507

Adjacent sequences: A024141 A024142 A024143 * A024145 A024146 A024147

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved