A139293 (2^(2p - 1)/8)-1, where p is prime.

0, 3, 63, 1023, 262143, 4194303, 1073741823, 17179869183, 4398046511103, 18014398509481983, 288230376151711743, 1180591620717411303423, 302231454903657293676543, 4835703278458516698824703

Offset

1,2

Links

Table of n, a(n) for n=1..14.

Formula

a(n) = (A139286(n)/8)-1.

Mathematica

(2^(2#-1))/8-1&/@Prime[Range[30]] (* Harvey P. Dale, May 09 2012 *)

Crossrefs

Cf. A139286, A139287, A139288, A139289, A139290, A139291, A139292, A139294, A139306.

Sequence in context: A046181 A151993 A120053 * A370827 A133275 A258657

Adjacent sequences: A139290 A139291 A139292 * A139294 A139295 A139296

Keyword

nonn

Author

Omar E. Pol, Apr 13 2008

Extensions

More terms from Jon E. Schoenfield, Jul 16 2010

Status

approved