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 A077190 #8 Mar 04 2020 20:29:28 %S A077190 1,4107,0,1763664903,1369,11,949665717,0 %N A077190 a(n) = A077189(n)/(2n-1). %C A077190 a(5k+3) = 0. Are there any other values of n so that a(n) = 0? %H A077190 Jinyuan Wang, <a href="/A077190/b077190.txt">Table of n, a(n) for n = 1..11</a> %e A077190 a(5) = 12321/9 = 1369. %Y A077190 Cf. A077180, A077181, A077182, A077183, A077184, A077186, A077188, A077189. %K A077190 nonn,base %O A077190 1,2 %A A077190 _Amarnath Murthy_, Nov 01 2002 %E A077190 a(7)-a(8) from _Jinyuan Wang_, Mar 04 2020