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A152961 Base 2 logarithm of A136007(n)+1. 1
2, 3, 5, 7, 13, 17, 19, 31, 61, 127, 521 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

First 10 members coincide with A109799, related to Mersenne Chen primes.

LINKS

Table of n, a(n) for n=1..11.

CROSSREFS

Cf. A000043, A109799, A136002, A136003, A136005, A136007.

Sequence in context: A233516 A000043 A109799 * A109461 A138539 A090422

Adjacent sequences:  A152958 A152959 A152960 * A152962 A152963 A152964

KEYWORD

hard,more,nonn

AUTHOR

Omar E. Pol, Dec 16 2008, Dec 20 2008

STATUS

approved

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Last modified February 22 21:26 EST 2018. Contains 299469 sequences. (Running on oeis4.)