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A199107
a(n) = 5*12^n-1.
1
4, 59, 719, 8639, 103679, 1244159, 14929919, 179159039, 2149908479, 25798901759, 309586821119, 3715041853439, 44580502241279, 534966026895359, 6419592322744319, 77035107872931839, 924421294475182079, 11093055533702184959
OFFSET
0,1
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
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 03 2011
STATUS
approved