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A139293 (2^(2p - 1)/8)-1, where p is prime. 7
0, 3, 63, 1023, 262143, 4194303, 1073741823, 17179869183, 4398046511103, 18014398509481983, 288230376151711743, 1180591620717411303423, 302231454903657293676543, 4835703278458516698824703 (list; graph; refs; listen; history; text; internal format)
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 * A133275 A258657 A123687

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

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Last modified April 23 02:43 EDT 2019. Contains 322380 sequences. (Running on oeis4.)