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 A377921 #34 Dec 15 2024 10:57:41 %S A377921 0,0,0,1,0,3,4,15,42,131,438,1467,5204,18687,69306,261473,1007328, %T A377921 3943155,15679474,63199785,257983836,1065186381,4444618518, %U A377921 18725820855,79603364236,341206137453,1473818915658,6411853714819,28082121491796,123764682835371,548675459164202 %N A377921 Number of 3-connected Schnyder labelings with n inner faces in the quadrangular dissection, whose outer white vertices are non-isolated. %C A377921 Also number of strong equivalence classes of tricolored contact-systems with n+3 curves. - _Éric Fusy_, Dec 14 2024 %H A377921 Éric Fusy, E. Narmanli, and G. Schaeffer, <a href="https://arxiv.org/abs/2202.09172">Enumeration of corner polyhedra and 3-connected Schnyder labelings</a>, arXiv preprint arXiv:2202.09172 [math.CO], 2022-2023. See s^tilde_n. %Y A377921 Cf. A377920, A377922, A377923, A342141. %K A377921 nonn %O A377921 0,6 %A A377921 _N. J. A. Sloane_, Dec 13 2024 %E A377921 a(13) onwards from _Éric Fusy_, Dec 14 2024