A024081 a(n) = 7^n - n^6.

1, 6, -15, -386, -1695, 1182, 70993, 705894, 5502657, 39822166, 281475249, 1975555182, 13838301217, 96884183598, 678215543313, 4747550119318, 33232913792385, 232630489849638, 1628413563898225, 11398895138327262

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..400

Index entries for linear recurrences with constant coefficients, signature (14,-70,182,-280,266,-154,50,-7).

Mathematica

Table[7^n-n^6, {n, 0, 30}] (* Harvey P. Dale, May 28 2019 *)

Prog

(Magma) [7^n-n^6: n in [0..20]]; // Vincenzo Librandi, Jul 2011

Crossrefs

Sequence in context: A335578 A199095 A235230 * A145558 A145612 A307812

Adjacent sequences: A024078 A024079 A024080 * A024082 A024083 A024084

Keyword

sign,easy

Author

N. J. A. Sloane.

Status

approved