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Search: id:A111403
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A111403 f(f(n+1)-f(f(n), where f(m) = 2^m. +0
1
2, 12, 240, 65280, 4294901760, 18446744069414584320, 340282366920938463444927863358058659840, 115792089237316195423570985008687907852929702298719625575994209400481361428480 (list; graph; listen)
OFFSET

0,1

FORMULA

Conjecture: a(n)=A002716(2*n)-1. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 15 2007

CROSSREFS

Sequence in context: A132877 A007685 A132987 this_sequence A007986 A013503 A132481

Adjacent sequences: A111400 A111401 A111402 this_sequence A111404 A111405 A111406

KEYWORD

nonn

AUTHOR

njas, Nov 12 2005

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.


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