A199107 a(n) = 5*12^n-1.

4, 59, 719, 8639, 103679, 1244159, 14929919, 179159039, 2149908479, 25798901759, 309586821119, 3715041853439, 44580502241279, 534966026895359, 6419592322744319, 77035107872931839, 924421294475182079, 11093055533702184959

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..900

Index entries for linear recurrences with constant coefficients, signature (13,-12).

Formula

a(n) = 12*a(n-1)+11.

a(n) = 13*a(n-1)-12*a(n-2).

G.f.: (4+7*x)/((1-x)*(1-12*x)). - Bruno Berselli, Nov 03 2011

Prog

(Magma) [5*12^n-1: n in [0..20]];
(PARI) a(n)=5*12^n-1 \\ Charles R Greathouse IV, Nov 03 2014

Crossrefs

Sequence in context: A183462 A093597 A257069 * A280668 A198508 A126754

Adjacent sequences: A199104 A199105 A199106 * A199108 A199109 A199110

Keyword

nonn,easy

Author

Vincenzo Librandi, Nov 03 2011

Status

approved