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A127962 Binary expansion of A000979(n). 8
11, 1011, 101011, 1010101011, 101010101011, 1010101010101011, 101010101010101011, 1010101010101010101011, 101010101010101010101010101011 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

PROG

(Python)

from gmpy2 import divexact

from sympy import prime, isprime

A127962 = [int(bin(p)[2:]) for p in (divexact(2**prime(n)+1, 3) for n in range(2, 10**2)) if isprime(p)] # Chai Wah Wu, Sep 04 2014

CROSSREFS

Cf. A127961, A000979, A000978, A124400, A126614, A127955, A127956, A127957, A127958, A127936.

Sequence in context: A289573 A289886 A127961 * A267606 A015511 A065050

Adjacent sequences:  A127959 A127960 A127961 * A127963 A127964 A127965

KEYWORD

nonn

AUTHOR

Artur Jasinski, Feb 09 2007

EXTENSIONS

Edited by N. J. A. Sloane, Jun 11 2007

STATUS

approved

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Last modified February 17 16:15 EST 2018. Contains 299296 sequences. (Running on oeis4.)