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 A361409 #6 Mar 11 2023 18:26:23 %S A361409 1,0,1,5,66,1071,27606,887305,34583357,1562797351,80177945542, %T A361409 4597212665432,291214532031215,20193430937073303,1521240318892230748, %U A361409 123711268485285686123,10801367759750192440520,1007762402877770768660697,100058924666668698411972015,10533938778032068908299390227,1172080056205294525370971027435 %N A361409 Number of bicolored cubic graphs on 2n unlabeled vertices with n vertices of each color. %C A361409 Adjacent vertices may have the same color. %Y A361409 Central coefficients of A361361. %Y A361409 Cf. A005638, A361406, A361410, A361411. %K A361409 nonn %O A361409 0,4 %A A361409 _Andrew Howroyd_, Mar 11 2023