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 A174082 #12 May 18 2025 19:03:44 %S A174082 1,1,1,5,18,91,544,3842,30573,277532,2770405,30591153,366836571, %T A174082 4783219673,66906770461,1006000805687 %N A174082 Number of circular permutations of (0,1,...,n-1) with no consecutive triples i,i+d,i+2d for all d>0. %C A174082 Circular permutations are permutations whose indices are from the ring of integers modulo n. %e A174082 For n=4 there is only (4-1)!-a(4) = 1 circular permutation with a consecutive triple i,i+d,i+2d. It is (0,1,2,3). %Y A174082 Cf. A078628, A174074, A174080, A174081, A174083. %K A174082 nonn,more %O A174082 1,4 %A A174082 _Isaac Lambert_, Mar 15 2010 %E A174082 a(1)-a(3) and a(10)-a(13) from _Pontus von Brömssen_, Feb 11 2024 %E A174082 a(14)-a(16) from _Bert Dobbelaere_, May 18 2025