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 A384381 #5 Jun 01 2025 16:38:18 %S A384381 10,13,59,141,357,6752,30,72,157,442,1950,10,40,45,180,701,1035,1646, %T A384381 14793,153721,3920545,42372,1495651,59265752 %N A384381 Number of connected subsets of faces (or polyforms) of the n-th Johnson solid, up to symmetries of that solid. %C A384381 Two faces are connected if they share an edge. %C A384381 The empty set is not included in the counts. %H A384381 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/JohnsonSolid.html">Johnson Solid</a>. %H A384381 Wikipedia, <a href="https://en.wikipedia.org/wiki/List_of_Johnson_solids">List of Johnson solids</a>. %Y A384381 Row sums of A384380. %Y A384381 Cf. A384377, A384379. %K A384381 nonn,fini,more %O A384381 1,1 %A A384381 _Pontus von Brömssen_ and _Peter Kagey_, May 28 2025