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 A035246 #7 Jul 30 2020 12:20:20 %S A035246 1,2,3,4,6,7,8,9,12,13,14,16,18,19,21,24,25,26,27,28,31,32,36,37,38, %T A035246 39,42,43,48,49,50,52,54,56,57,61,62,63,64,67,72,73,74,75,76,78,79,81, %U A035246 84,86,91,93,96,97,98,100,103,104,108,109,111,112,114,117,121 %N A035246 Indices of the nonzero terms in expansion of Dirichlet series Product_p (1-(Kronecker(m,p)+1)*p^(-s)+Kronecker(m,p)*p^(-2s))^(-1) for m= -12. %o A035246 (PARI) m=-12; select(x -> x, direuler(p=2,101,1/(1-(kronecker(m,p)*(X-X^2))-X)), 1) %Y A035246 Cf. A035178 (the expansion itself). %K A035246 nonn %O A035246 1,2 %A A035246 _N. J. A. Sloane_ %E A035246 Edited and extended by _Andrey Zabolotskiy_, Jul 30 2020