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 A067301 #5 Jun 26 2022 04:25:27 %S A067301 8,41,398,4460,53720,677744,8836832,118109888,1609484672,22276767488, %T A067301 312305704448,4425515174912,63285369657344,912105965121536, %U A067301 13235652537933824,193215065765888000,2835518953336438784 %N A067301 One eighth of fourth column of triangle A067298. %F A067301 a(n) = A067298(n+3, 3)/8. %F A067301 G.f.: ((-3+37*x)+(3+15*x-84*x^2)*c(4*x))/(8*x*(1-2*x*c(4*x))^2), with c(x) is g.f. for A000108 (Catalan). %Y A067301 Cf. A000108, A067298. %Y A067301 Cf. 3*A067300 (third column). %K A067301 nonn,easy %O A067301 0,1 %A A067301 _Wolfdieter Lang_, Feb 05 2002