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 A162781 #9 Mar 05 2020 04:14:27 %S A162781 0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,2,1,1,1,1,1,1,0,1,0,1,1,1,1,2,1,1,1, %T A162781 1,1,1,1,0,0,0,1,1,0,0,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,1,1,1,1,2,1,1, %U A162781 1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1 %N A162781 a(n) = A002410(n) - A162780(n). %C A162781 This sequence is related to the Riemann zeta function. %H A162781 <a href="/index/Z#zeta_function">Index entries for zeta function</a> %Y A162781 Cf. A002410, A162774, A161914, A162780, A162782. %K A162781 sign %O A162781 1,17 %A A162781 _Omar E. Pol_, Jul 13 2009 %E A162781 More terms from _Jinyuan Wang_, Mar 02 2020