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 A373455 #10 Jun 07 2024 05:19:37 %S A373455 1,1,2,6,15,43,124,379,1172,3730,12023,39388,130377,436066,1470271, %T A373455 4994083,17069343,58669677,202648664,703064353,2448871526,8560428736, %U A373455 30021944259,105602286616,372469127865,1317027839250,4667702488376,16578315095909 %N A373455 Number of interval posets of permutations of size n, considered up to isomorphism. %C A373455 See Remark 21 in [Bouvel-Cioni-Izart]. %D A373455 Bridget E. Tenner. Interval Posets of Permutations. Order, 39(3):523-536, 2022. %H A373455 Mathilde Bouvel, Lapo Cioni, and Benjamin Izart, <a href="https://arxiv.org/abs/2110.10000">The interval posets of permutations seen from the decomposition tree perspective</a>, arXiv:2110.10000 [math.CO], 2021-2024. %H A373455 Bridget E. Tenner, <a href="https://arxiv.org/abs/2007.06142">Interval Posets for Permutations</a>, arXiv:2007.06142 [math.CO], 2020-2021. %F A373455 Asymptotic behavior of a(n) is c*n^(-3/2)*r^n with c approximately 0.1964 and r approximately 3.7545. See M. Bouvel, L. Cioni, B. Izart (Remark 21). %Y A373455 For the same posets but not considered up to isomorphism, see A348479. %Y A373455 For the same posets which are in addition trees, see A373456. %K A373455 nonn %O A373455 1,3 %A A373455 _Mathilde Bouvel_, Jun 06 2024