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A155625 11^n+4^n-1. 15
1, 14, 136, 1394, 14896, 162074, 1775656, 19503554, 214424416, 2358209834, 25938473176, 285315864914, 3138445153936, 34522779252794, 379750102018696, 4177249243157474, 45949734158539456, 505447045679162954 (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 (16,-59,44).

FORMULA

G.f.: 1/(1-11*x)+1/(1-4*x)-1/(1-x). E.g.f.: e^(11*x)+e^(4*x)-e^x.

a(n)=15*a(n-1)-44*a(n-2)-30 with a(0)=1, a(1)=14 - Vincenzo Librandi, Jul 21 2010

PROG

(PARI) a(n)=11^n+4^n-1 \\ Charles R Greathouse IV, Jun 11 2015

CROSSREFS

Cf. A155588, A155589, A155590, A155592, A155593, A155594, A155595, A155596, A155597, A155598, A155599, A155600, A155601, A155622, A155623, A155624.

Sequence in context: A244651 A004004 A002753 * A016296 A021044 A121034

Adjacent sequences:  A155622 A155623 A155624 * A155626 A155627 A155628

KEYWORD

nonn,easy

AUTHOR

Mohammad K. Azarian, Jan 29 2009

STATUS

approved

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Last modified November 18 21:04 EST 2018. Contains 317331 sequences. (Running on oeis4.)