A126055 Exponents p of the Mersenne primes 2^p - 1 (see A000043) read mod 15.

2, 3, 5, 7, 13, 2, 4, 1, 1, 14, 2, 7, 11, 7, 4, 13, 1, 7, 8, 13, 14, 11, 8, 2, 11, 4, 7, 8, 13, 4, 1, 14, 8, 7, 14, 11, 2, 8, 7, 1, 13, 11, 7, 2, 2, 1, 14, 11

Offset

1,1

Links

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

Formula

a(n) = A167463(A000043(n)). - Michel Marcus, Apr 07 2018

Mathematica

Mod[MersennePrimeExponent[Range[47]], 15] (* Harvey P. Dale, Feb 02 2022 *)

Crossrefs

Cf. A000043, A167463, A126043-A126059.

Sequence in context: A217396 A126057 A126056 * A126054 A067836 A332806

Adjacent sequences: A126052 A126053 A126054 * A126056 A126057 A126058

Keyword

nonn,more,changed

Author

Artur Jasinski, Dec 17 2006

Extensions

a(45)-a(47) from Ivan Panchenko, Apr 08 2018

a(48) from Amiram Eldar, Oct 15 2024

Status

approved