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 A357602 #42 Nov 01 2022 07:15:01 %S A357602 0,0,0,1,15,121,1026,8696,81515,827282,9200052 %N A357602 a(n) is the number of n-gons in A000940 that are asymmetric. %F A357602 a(n) = A000940(n) - A342533(n). %F A357602 a(p) = ((((p-1)! + 1)/p) + p - 2 - (2^((p-1)/2)*((p-1)/2)!))/4 for prime p. See A007619. %e A357602 Of the A000940(6) = 12 hexagons, 11 have symmetry and 1 is asymmetric, so a(6)=1. %Y A357602 Cf. A000940, A342533. %K A357602 nonn,more %O A357602 3,5 %A A357602 _Ian Mooney_, Oct 05 2022