A134722 Bisection of Mersenne primes A000668.

7, 127, 131071, 2147483647, 618970019642690137449562111

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Formula

a(n) = A000668(2*n).

Example

a(3) = 131071 because the (2*3=6)th Mersenne prime is 131071.

Crossrefs

Cf. A000668, A134721.

Sequence in context: A253851 A077585 A261487 * A053713 A077586 A277634

Adjacent sequences: A134719 A134720 A134721 * A134723 A134724 A134725

Keyword

easy,nonn

Author

Omar E. Pol, Nov 11 2007

Status

approved