A198845 8*6^n-1.

7, 47, 287, 1727, 10367, 62207, 373247, 2239487, 13436927, 80621567, 483729407, 2902376447, 17414258687, 104485552127, 626913312767, 3761479876607, 22568879259647, 135413275557887, 812479653347327, 4874877920083967, 29249267520503807

Offset

0,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (7,-6).

Formula

a(n) = 6*a(n-1)+5. a(n) = 7*a(n-1)-6*a(n-2), n>1.

Prog

(Magma) [8*6^n-1: n in [0..30]]

Crossrefs

Sequence in context: A269520 A009260 A201871 * A323131 A229010 A126635

Adjacent sequences: A198842 A198843 A198844 * A198846 A198847 A198848

Keyword

nonn,easy

Author

Vincenzo Librandi, Oct 31 2011

Status

approved