A233008 p mod 24, where p is such that 2^p - 1 is prime (see Mersenne primes, A000043).

2, 3, 5, 7, 13, 17, 19, 7, 13, 17, 11, 7, 17, 7, 7, 19, 1, 1, 5, 7, 17, 5, 5, 17, 5, 1, 1, 11, 7, 1, 19, 23, 17, 19, 5, 5, 17, 17, 13, 19, 7, 23, 1, 17, 11, 1, 17

Offset

1,1

Links

Table of n, a(n) for n=1..47.

C. K. Caldwell, Recent Mersenne primes

C. K. Caldwell, Mersenne Primes

W. Wegscheider, Liste der Mersenne-Primzahlen, Pädagogische Hochschule für Niederösterreich (in German).

Formula

a(n) = A000043(n) mod 24.

Mathematica

Mod[#, 24] &@ MersennePrimeExponent@ Range@ 45 (* Michael De Vlieger, Jul 22 2018 *)

Crossrefs

Cf. A000043, A000668, A124477, A126043-A126059, A233009.

Sequence in context: A092878 A126059 A126058 * A233009 A243535 A308078

Adjacent sequences: A233005 A233006 A233007 * A233009 A233010 A233011

Keyword

nonn,more

Author

Freimut Marschner, Dec 03 2013

Extensions

a(46)-a(47) corrected and a(48) removed by Gord Palameta, Jul 21 2018

Status

approved