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 A270960 #7 Jun 02 2025 12:17:23 %S A270960 1,76,1650,23031,264716,2788215,28315287,284453798,2865664275, %T A270960 29172005637,301410662549,3169264274716,33967946651067, %U A270960 371460612845541,4146934516914449,47274580420037008,550357684288267873,6542615612312034842,79410538735157560508 %N A270960 Number of set partitions of [n] having exactly six pairs (m,m+1) such that m+1 is in some block b and m is in block b+1. %H A270960 Alois P. Heinz, <a href="/A270960/b270960.txt">Table of n, a(n) for n = 10..220</a> %H A270960 Wikipedia, <a href="https://en.wikipedia.org/wiki/Partition_of_a_set">Partition of a set</a> %e A270960 a(10) = 1: 136(10)|259|48|7. %Y A270960 Column k=6 of A270953. %K A270960 nonn %O A270960 10,2 %A A270960 _Alois P. Heinz_, Mar 26 2016