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A152961 Base 2 logarithm of A136007(n)+1. +0
2
2, 3, 5, 7, 13, 17, 19, 31, 61, 127, 521 (list; graph; listen)
OFFSET

1,1

COMMENT

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

CROSSREFS

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

Sequence in context: A120857 A000043 A109799 this_sequence A109461 A138539 A090422

Adjacent sequences: A152958 A152959 A152960 this_sequence A152962 A152963 A152964

KEYWORD

hard,more,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Dec 16 2008, Dec 20 2008

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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