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 A269475 #6 Feb 27 2016 13:29:10 %S A269475 50050,6722816,518329776,30117189632,1465000951488,62975678300160, %T A269475 2470387045006848,90292919910531072,3119354397619080192, %U A269475 102915871717248204800,3267760665556454645760,100445704140200060387328,3002862102035496252702720,87633111828414712529289216 %N A269475 Column 3 of A266240. %H A269475 Vaclav Kotesovec, <a href="/A269475/b269475.txt">Table of n, a(n) for n = 5..740</a> %F A269475 Recurrence: (n-6)*(n-5)*(n-4)*(29502900*n^5 - 638835615*n^4 + 5313614190*n^3 - 21144479540*n^2 + 40005200008*n - 28551437376)*a(n) = 48*(n-6)*(531052200*n^7 - 11764567170*n^6 + 101977544025*n^5 - 438480135000*n^4 + 970011352524*n^3 - 1010121211456*n^2 + 327724902720*n + 69389516800)*a(n-2) - 20736*(n-2)*(3*n - 10)*(3*n - 8)*(29502900*n^5 - 343806615*n^4 + 1383045270*n^3 - 2234617160*n^2 + 1108144448*n + 112680960)*a(n-4). %F A269475 a(n) ~ 5 * 7^2 * 3^(3*n/2-3) * 2^(2*n-15) * n^5. %Y A269475 Cf. A266240. %K A269475 nonn %O A269475 5,1 %A A269475 _Vaclav Kotesovec_, Feb 27 2016