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 A256035 #13 Aug 06 2019 02:39:18 %S A256035 1,1,6,59,807,14102,301039,7618613,223586932,7482796089,281882090283 %N A256035 Number of idempotent basis elements in partition monoid P_n. %H A256035 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 3. %Y A256035 Cf. A060639, A256033, A256034, A225797. %K A256035 nonn,more %O A256035 0,3 %A A256035 _N. J. A. Sloane_, Mar 14 2015