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%I #14 Feb 02 2022 14:07:16
%S 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,
%T 1,14,8,7,14,11,2,8,7,1,13,11,7,2,2,1,14
%N Exponents p of the Mersenne primes 2^p - 1 (see A000043) read mod 15.
%F a(n) = A167463(A000043(n)). - _Michel Marcus_, Apr 07 2018
%t Mod[MersennePrimeExponent[Range[47]],15] (* _Harvey P. Dale_, Feb 02 2022 *)
%Y Cf. A126043-A126059.
%K nonn,more
%O 1,1
%A _Artur Jasinski_, Dec 17 2006
%E a(45)-a(47) from _Ivan Panchenko_, Apr 08 2018
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