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A126055
Exponents p of the Mersenne primes 2^p - 1 (see A000043) read mod 15.
0
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
FORMULA
a(n) = A167463(A000043(n)). - Michel Marcus, Apr 07 2018
MATHEMATICA
Mod[MersennePrimeExponent[Range[47]], 15] (* Harvey P. Dale, Feb 02 2022 *)
CROSSREFS
KEYWORD
nonn,more
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