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 A306176 #9 Mar 23 2025 07:04:41 %S A306176 1,3,4,12,18,50,78,208,337,867,1440,3613,6133,15058,26037,62756, %T A306176 110274,261524,466183,1089717,1967725,4540103,8294946,18913123, %U A306176 34929064,78778601,146943175,328097471,617667052,1366311508,2594446392,5689203511,10890701272,23687039917,45689624111,98612105026 %N A306176 Number of symmetric unrooted self-avoiding walks of n steps on hexagonal lattice. %H A306176 Hugo Pfoertner, <a href="http://www.randomwalk.de/sequences/a306176.htm">Illustration of walks of lengths <= 7</a>. %Y A306176 Cf. A001334, A151541. %K A306176 nonn,walk %O A306176 1,2 %A A306176 _Hugo Pfoertner_, Jun 25 2018 %E A306176 a(10)-a(36) from _Bert Dobbelaere_, Mar 23 2025