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 A341921 #7 Mar 13 2021 17:02:40 %S A341921 1,9,50,254,1287,6630,34846,186714,1018095,5638035,31651992,179850344, %T A341921 1032901028,5988670002,35017696806,206326044386,1224068679855, %U A341921 7307391855855,43871253636210,264755875041630,1605357997312335,9776732655285960,59781214452500424,366905787075963864 %N A341921 Number of simple strong triangulations of a fixed hexagon with n interior nodes. %H A341921 Andrew Howroyd, <a href="/A341921/b341921.txt">Table of n, a(n) for n = 1..500</a> %o A341921 (PARI) R(25,3) \\ R defined in A210664. %Y A341921 Row m=3 of A210664. %Y A341921 Cf. A341918. %K A341921 nonn %O A341921 1,2 %A A341921 _Andrew Howroyd_, Feb 24 2021