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A155662 11^n-7^n+1. 12
1, 5, 73, 989, 12241, 144245, 1653913, 18663629, 208594081, 2317594085, 25654949353, 283334343869, 3124587089521, 34425823133525, 379071610510393, 4172500607905709, 45916496933002561, 505214397985306565 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..17.

Index entries for linear recurrences with constant coefficients, signature (19,-95,77).

FORMULA

G.f.: 1/(1-11*x)-1/(1-7*x)+1/(1-x). E.g.f.: e^(11*x)-e^(7*x)+e^x.

a(n)=18*a(n-1)-77*a(n-2)+60 with a(0)=1, a(1)=5 - Vincenzo Librandi, Jul 21 2010

PROG

(PARI) a(n)=11^n-7^n+1 \\ Charles R Greathouse IV, Jun 11 2015

CROSSREFS

Cf. A155638, A155639, A155640, A155641, A155642, A155643, A155644, A155645, A155646, A155647, A155648, A155649, A155650, A155651, A155652, A155653, A155654, A155655, A155656, A155657, A155658, A155659, A155660, A155661.

Sequence in context: A059017 A099667 A108444 * A182328 A222352 A159509

Adjacent sequences:  A155659 A155660 A155661 * A155663 A155664 A155665

KEYWORD

nonn,easy

AUTHOR

Mohammad K. Azarian, Jan 31 2009

STATUS

approved

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Last modified March 30 16:16 EDT 2020. Contains 333127 sequences. (Running on oeis4.)