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A119572 a(n) = (2^(2^n) + 1 + 2^(2^(n + 1) - 1) + 1)/2 0
3, 7, 73, 16513, 1073774593, 4611686020574871553, 85070591730234615875067023894796828673, 28948022309329048855892746252171976963487637349870610241596083305694166515713 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..7.

MATHEMATICA

a=Table[(2^(2^n) + 1 + 2^(2^(n + 1) - 1) + 1)/2, {n, 0, 10}]

CROSSREFS

Sequence in context: A088647 A075611 A191485 * A172995 A325476 A234536

Adjacent sequences:  A119569 A119570 A119571 * A119573 A119574 A119575

KEYWORD

nonn

AUTHOR

Roger L. Bagula, May 31 2006

EXTENSIONS

Edited by N. J. A. Sloane, Jun 03 2006

STATUS

approved

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Last modified February 19 16:24 EST 2020. Contains 332045 sequences. (Running on oeis4.)