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A140529 a(n) = 6*4^n - 1. 5
5, 23, 95, 383, 1535, 6143, 24575, 98303, 393215, 1572863, 6291455, 25165823, 100663295, 402653183, 1610612735, 6442450943, 25769803775, 103079215103, 412316860415, 1649267441663, 6597069766655, 26388279066623, 105553116266495 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

FORMULA

a(n) = 4*a(n-1) + 3, a(0)=5.

Also A002023(n) - 1 or A000302(n+1) + A083420(n).

PROG

(MAGMA) [6*4^n-1: n in [0..30]]; // Vincenzo Librandi, Aug 08 2011

CROSSREFS

Cf. A028894.

Sequence in context: A146013 A028894 A254824 * A055489 A109765 A323922

Adjacent sequences:  A140526 A140527 A140528 * A140530 A140531 A140532

KEYWORD

nonn,easy

AUTHOR

Paul Curtz, Jul 03 2008

STATUS

approved

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Last modified November 29 21:32 EST 2021. Contains 349416 sequences. (Running on oeis4.)