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 A071546 #6 Mar 30 2012 18:39:00 %S A071546 5,2,5,10,17,26,37,5,65,82,101,2,13,170,197,226,61,10,325,362,5,61,13, %T A071546 530,577,626,41,149,785,65,73,17,149,146,1157,1226,41,74,1445,1522, %U A071546 1601,317,397,373,1937,221,97,74,2305,26,2501,130,493,2810,5,3026,29 %N A071546 Smallest integer > 1 of the form (k^2+1)/(n^2+1). %F A071546 a(n)=(A065876(n)^2+1)/(n^2+1) %o A071546 (PARI) for(n=1,70,s=n+1; while((s^2+1)%(n^2+1)>0,s++); print1((s^2+1)/(n^2+1),",")) %Y A071546 Cf. A065876. %K A071546 easy,nonn %O A071546 1,1 %A A071546 _Benoit Cloitre_, May 30 2002