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A152961
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Base 2 logarithm of A136007(n)+1.
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1
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2, 3, 5, 7, 13, 17, 19, 31, 61, 127, 521
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| First 10 members coincide with A109799, related to Mersenne Chen primes.
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CROSSREFS
| Cf. A000043, A109799, A136002, A136003, A136005, A136007.
Sequence in context: A120857 A000043 A109799 * A109461 A138539 A090422
Adjacent sequences: A152958 A152959 A152960 * A152962 A152963 A152964
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KEYWORD
| hard,more,nonn
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AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Dec 16 2008, Dec 20 2008
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