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A139305
(2^(2p - 1)/32)-1, where p=A000668(n) is n-th Mersenne prime.
2
0, 255, 72057594037927935, 452312848583266388373324160190187140051835877600158453279131187530910662655
OFFSET
1,2
COMMENTS
Next term is too large to list here.
FORMULA
a(n) = (2^(2*A000668(n)-1)/32)-1 = (A139294(n)/32)-1.
KEYWORD
nonn
AUTHOR
Omar E. Pol, Apr 13 2008
EXTENSIONS
Edited by Max Alekseyev, Apr 23 2010
STATUS
approved