A152961 Base-2 logarithm of A136007(n)+1.

2, 3, 5, 7, 13, 17, 19, 31, 61, 127, 521

Offset

1,1

Comments

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

Links

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

Formula

a(n) = A000523(A136007(n)+1). - Michel Marcus, Apr 14 2021

Crossrefs

Cf. A000043, A000523, A109799, A136002, A136003, A136005, A136007.

Sequence in context: A366029 A000043 A109799 * A109461 A138539 A337119

Adjacent sequences: A152958 A152959 A152960 * A152962 A152963 A152964

Keyword

hard,more,nonn

Author

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

Status

approved