A024086 a(n) = 7^n - n^11.

1, 6, -1999, -176804, -4191903, -48811318, -362679407, -1976503200, -8584169791, -31340706002, -99717524751, -283334343868, -729167083487, -1695271383630, -3371342096815, -3902194349432, 15640744525185

Offset

0,2

Links

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

G. Villemin's Almanach of Numbers, Convenience store number

Formula

E.g.f.: exp(7*x) - exp(x)*x*(1 + 1023*x + 28501*x^2 + 145750*x^3 + 246730*x^4 + 179487*x^5 + 63987*x^6 + 11880*x^7 + 1155*x^8 + 55*x^9 + x^10). - Stefano Spezia, Aug 16 2019

Prog

(Magma) [7^n-n^11: n in [0..20]]; // Vincenzo Librandi, Jul 04 2011

Crossrefs

Sequence in context: A160301 A209496 A341872 * A094036 A053293 A209737

Adjacent sequences: A024083 A024084 A024085 * A024087 A024088 A024089

Keyword

sign,easy

Author

N. J. A. Sloane

Status

approved