A139302 2^(2p - 1)/16, where p is a Mersenne prime A000668(n).

2, 512, 144115188075855872

Offset

1,1

Links

Table of n, a(n) for n=1..3.

Formula

a(n) = 2^(2*A000668(n)-1)/16 = A139294(n)/16.

Crossrefs

Sequence in context: A109111 A004886 A234606 * A003391 A294276 A320520

Adjacent sequences: A139299 A139300 A139301 * A139303 A139304 A139305

Keyword

bref,nonn

Author

Omar E. Pol, Apr 13 2008

Status

approved