A101329 - OEIS

A101329

2^(2^(2^x)+1)-1 = M(F(x)) == Mersenne(Fermat(x))

7, 31, 131071, 231584178474632390847141970017375815706539969331281128078915168015826259279871

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OFFSET

0,1

COMMENTS

Mersenne-Fermat numbers.

LINKS

FORMULA

a(n) = A070969(2^n)-2. - R. J. Mathar, Apr 22 2007

EXAMPLE

M(F(0))=7

M(F(1))=31

M(F(2))=131071

M(F(3))=231584178474632390847141970017375815706539969331281128078915168015826259279871

PROG

(PARI) for(x=0, 3, print(2^(2^(2^x)+1)-1))

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved