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 A049608 #7 Oct 26 2015 08:44:43 %S A049608 0,1,6,34,190,1059,5908,33028,185076,1039525,5851626,33006438, %T A049608 186519138,1055789511,5985405000,33979107336,193143097288 %N A049608 a(n)=T(n,n+2), array T as in A049600. %H A049608 Milan Janjic, <a href="http://www.pmfbl.org/janjic/">Two Enumerative Functions</a> %F A049608 Conjecture: (n-1)*(2*n-1)*(n+2)*a(n) -12*n*(n-1)*(n+1)*a(n-1) +(n-2)*(2*n+1)*(n+1)*a(n-2)=0. - _R. J. Mathar_, Oct 26 2015 %K A049608 nonn %O A049608 0,3 %A A049608 _Clark Kimberling_