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A069255 (2^((2*n-1)^2)+1)/(2^(2*n-1)+1). 0
1, 57, 1016801, 4363953127297, 4713161090115513351681, 1297440698667560637290197228189697, 91332703321545501540374299322682400349546864641 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..7.

CROSSREFS

Sequence in context: A093257 A210148 A261948 * A065869 A301558 A022082

Adjacent sequences:  A069252 A069253 A069254 * A069256 A069257 A069258

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Apr 14 2002

STATUS

approved

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Last modified May 9 10:39 EDT 2021. Contains 343732 sequences. (Running on oeis4.)