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 A182322 #22 Jun 02 2025 03:14:03 %S A182322 1,1,1,3,7,30,131,795,5152,36800,272093,2077909,16176607,127996683, %T A182322 1025727646,8310377720,67967600763,560527576100,4656993996246, %U A182322 38949328897318,327718211568300,2772480181758683,23571996461405321,201327668784954950,1726755218246463325 %N A182322 Number of simplicial 4-clusters with n cells. (Formerly M2679). %C A182322 Some of the terms in the Hering article are in error, including the 6th, 8th and 9th. %D A182322 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A182322 F. Hering et al., <a href="http://dx.doi.org/10.1016/0012-365X(82)90121-2">The enumeration of stack polytopes and simplicial clusters</a>, Discrete Math., 40 (1982), 203-217. %F A182322 a(n) = (A007175(n) + A182299(n))/2. %Y A182322 This is the average of A007175 and A182299, both of which have Mathematica programs. %K A182322 nonn,easy %O A182322 1,4 %A A182322 _Robert A. Russell_, Apr 24 2012