A153798 a(n) = A000043(n)-2.

0, 1, 3, 5, 11, 15, 17, 29, 59, 87, 105, 125, 519, 605, 1277, 2201, 2279, 3215, 4251, 4421, 9687, 9939, 11211, 19935, 21699, 23207, 44495, 86241, 110501, 132047, 216089, 756837, 859431, 1257785, 1398267, 2976219, 3021375, 6972591, 13466915, 20996009, 24036581

Offset: 1

Author

Omar E. Pol, Jan 20 2009

Keywords

• nonn

Comments

Base 2 logarithm of A134708(n).

Links

• Amiram Eldar, Table of n, a(n) for n = 1..48

Crossrefs

Cf. A000043, A014635, A134708.

Programs

Mathematica

MersennePrimeExponent[Range[48]] - 2 (* Amiram Eldar, Oct 17 2024 *)

Extensions

a(40)-a(41) from Amiram Eldar, Oct 17 2024