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 A287585 #5 May 26 2017 20:56:41 %S A287585 1,1,2,5,15,52,203,877,3936,18095,84280,394852,1852811,8691683, %T A287585 40761476,190968022,893534860,4175717815,19494813589,90945241124, %U A287585 424026717957,1976119285318,9206350189686,42880144574315,199687348862859,929807546551337,4329119748507622 %N A287585 Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks and between consecutive elements within the blocks are not larger than six. %H A287585 Alois P. Heinz, <a href="/A287585/b287585.txt">Table of n, a(n) for n = 0..1000</a> %H A287585 Wikipedia, <a href="https://en.wikipedia.org/wiki/Partition_of_a_set">Partition of a set</a> %F A287585 a(n) = A000110(n) for n <= 7. %Y A287585 Column k=6 of A287417. %Y A287585 Cf. A000110. %K A287585 nonn %O A287585 0,3 %A A287585 _Alois P. Heinz_, May 26 2017