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A193578 (13^n+1)/2. 1
1, 7, 85, 1099, 14281, 185647, 2413405, 31374259, 407865361, 5302249687, 68929245925, 896080197019, 11649042561241, 151437553296127, 1968688192849645, 25592946507045379, 332708304591589921, 4325207959690668967, 56227703475978696565, 730960145187723055339 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

Index entries for linear recurrences with constant coefficients, signature (14,-13).

FORMULA

a(n) = 13*a(n-1)-6, a(0)=1

PROG

(MAGMA) [(13^n+1)/2: n in [0..20]]

(PARI) a(n)=(13^n+1)/2 \\ Charles R Greathouse IV, Dec 27 2011

CROSSREFS

Cf. A141012.

Sequence in context: A155459 A155631 A126344 * A309187 A026001 A064089

Adjacent sequences:  A193575 A193576 A193577 * A193579 A193580 A193581

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Sep 17 2011

STATUS

approved

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Last modified February 24 01:11 EST 2020. Contains 332195 sequences. (Running on oeis4.)