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 A167156 #18 Oct 09 2021 06:51:30 %S A167156 1,0,2,0,2,0,4,0,3,0,5,0,3,0,7,0,5,0,7,0,4,0,11,0,5,0,8,0,8,0,12,0,6, %T A167156 0,13,0,6,0,15,0,10,0,11,0,7,0,21,0,10,0,13,0,12,0,18,0,9,0,22,0,9,0, %U A167156 21,0,14,0,16,0,14 %N A167156 Number of n-vertex 4-hedrites. %C A167156 Is this the same as A145393 alternating with zeros? - _Andrey Zabolotskiy_, Jul 05 2017 %H A167156 Mathieu Dutour Sikiric, Michel Deza, <a href="http://arxiv.org/abs/0910.5323">4-regular and self-dual analogs of fullerenes</a>, arXiv:0910.5323 [math.GT], 2009. %e A167156 Although every other term is zero, this sequence should be kept, contrary to the usual OEIS rules, to be analogous to the related sequences. %Y A167156 Cf. A167157, A167158, A167159, A111361. %K A167156 nonn %O A167156 2,3 %A A167156 _Jonathan Vos Post_, Oct 29 2009