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A015496 a(0)=1, a(1)=8, a(n) = sum_{k=0}^{k=n-1} 8^k a(k). 0
1, 8, 65, 4225, 2167425, 8879940225, 290986761233025, 76280724523431338625, 159972350276487602091434625, 2683890834588642498097652544938625, 360225732702402245287553744812732691882625 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..10.

FORMULA

a(n) = (8^(n-2) + 1) * a(n-1). - Vincenzo Librandi, Nov 11 2012

PROG

(MAGMA) I:=[1, 8, 65]; [n le 3 select I[n] else (8^(n-2)+1)*Self(n-1): n in [1..15]]; // Vincenzo Librandi, Nov 11 2012

CROSSREFS

Sequence in context: A302316 A041114 A320990 * A226126 A039329 A230736

Adjacent sequences:  A015493 A015494 A015495 * A015497 A015498 A015499

KEYWORD

nonn,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified May 25 09:10 EDT 2022. Contains 354051 sequences. (Running on oeis4.)