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 A004346 #11 Mar 19 2025 09:10:50 %S A004346 1,25,435,6545,91390,1221759,15890700,202927725,2558620845, %T A004346 31966749880,396704524216,4898229264825,60246643120300, %U A004346 738799683460650,9038619861406740,110375347398090219,1345860629046814650 %N A004346 Binomial coefficient C(5n,n-4). %D A004346 M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 828. %H A004346 M. Abramowitz and I. A. Stegun, eds., <a href="http://www.convertit.com/Go/ConvertIt/Reference/AMS55.ASP">Handbook of Mathematical Functions</a>, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy]. %F A004346 D-finite with recurrence -8*(4*n+3)*(n-4)*(2*n+1)*(4*n+1)*(n+1)*a(n) +5*n*(5*n-4)*(5*n-3)*(5*n-2)*(5*n-1)*a(n-1)=0. - _R. J. Mathar_, Mar 19 2025 %K A004346 nonn,easy %O A004346 4,2 %A A004346 _N. J. A. Sloane_