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A199554 6*8^n+1. 1
7, 49, 385, 3073, 24577, 196609, 1572865, 12582913, 100663297, 805306369, 6442450945, 51539607553, 412316860417, 3298534883329, 26388279066625, 211106232532993, 1688849860263937, 13510798882111489, 108086391056891905 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

Index entries for linear recurrences with constant coefficients, signature (9,-8).

FORMULA

a(n) = 7*A083068(n).

a(n) = 8*a(n-1)-7.

a(n) = 9*a(n-1)-8*a(n-2).

G.f.: 7*(1-2*x)/((1-x)*(1-8*x)).

PROG

(MAGMA) [6*8^n+1: n in [0..30]];

CROSSREFS

Sequence in context: A144820 A333515 A324353 * A221462 A090016 A005924

Adjacent sequences:  A199551 A199552 A199553 * A199555 A199556 A199557

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 08 2011

STATUS

approved

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Last modified August 13 19:30 EDT 2020. Contains 336451 sequences. (Running on oeis4.)