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 A256032 #13 Aug 06 2019 02:39:11 %S A256032 1,2,7,38,241,1922,17359,180854,2092801,26851202,376371799 %N A256032 Number of idempotents in partial Brauer monoid PB_n. %H A256032 I. Dolinka, J. East, A. Evangelou, D. FitzGerald, N. Ham, et al., <a href="http://arxiv.org/abs/1408.2021">Enumeration of idempotents in diagram semigroups and algebras</a>, arXiv preprint arXiv:1408.2021 [math.GR], 2014. See Table 2 and Theorem 32 (iii). %Y A256032 Cf. A256031. %K A256032 nonn,more %O A256032 0,2 %A A256032 _N. J. A. Sloane_, Mar 14 2015