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 A111779 #5 Jun 08 2016 15:48:38 %S A111779 1,30,651,12600,235494,4396140,83471850,1627358040,32754696975, %T A111779 682573101210,14749179169725,330654317994000,7691170398011100, %U A111779 185559161386599000,4641068950134516900,120256269348313098000 %N A111779 Sixth column (m=5) of unsigned triangle A111595. %F A111779 E.g.f. (1/sqrt(1-x^2))*((x/(1-x))^5)/5!. %F A111779 a(n)=(n!/5!)*sum(binomial(2*k, k)*binomial(n-2*k-1, 4)/(4^k), k=0..floor((n-5)/2)), n>=5. %F A111779 Conjecture: +(-n+5)*a(n) +5*n*a(n-1) +n*(n-1)^2*a(n-2)=0. - _R. J. Mathar_, Jun 08 2016 %K A111779 nonn,easy %O A111779 5,2 %A A111779 _Wolfdieter Lang_, Aug 23 2005