This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A126049 #21 Oct 15 2024 04:30:16 %S A126049 2,3,5,7,4,8,1,4,7,8,8,1,8,4,1,7,4,4,5,4,5,5,8,2,2,7,1,5,1,1,1,2,5,1, %T A126049 2,2,5,5,1,1,4,5,7,2,5,1,8,5 %N A126049 Exponents p of the Mersenne primes 2^p - 1 (see A000043) read mod 9. %F A126049 a(n) = A010878(A000043(n)). - _Ivan Panchenko_, Apr 07 2018 %t A126049 Array[Mod[MersennePrimeExponent@ #, 9] &, 45] (* _Michael De Vlieger_, Apr 10 2018 *) %Y A126049 Cf. A000043, A010878, A126043-A126059. %K A126049 nonn,more %O A126049 1,1 %A A126049 _Artur Jasinski_, Dec 17 2006 %E A126049 a(45)-a(46) from _Ivan Panchenko_, Apr 07 2018 %E A126049 a(47) from _Ivan Panchenko_, Apr 09 2018 %E A126049 a(48) from _Amiram Eldar_, Oct 14 2024