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 A294057 #6 Oct 22 2017 12:56:33 %S A294057 877,9831,84026,645307,4673602,32556486,220262805,1455625827, %T A294057 9440565264,60325621897,380858965018,2380570287207,14755381094276, %U A294057 90809920042072,555505015465351,3380585458615769,20481290849184365,123607231008549590,743480537600356891,4458809280258460139 %N A294057 Number of set partitions of [n] such that the maximal absolute difference between consecutive elements within a block equals eight. %H A294057 Alois P. Heinz, <a href="/A294057/b294057.txt">Table of n, a(n) for n = 9..1000</a> %F A294057 a(n) = A287280(n) - A287279(n). %Y A294057 Column k=8 of A287213. %Y A294057 Cf. A287279, A287280. %K A294057 nonn,easy %O A294057 9,1 %A A294057 _Alois P. Heinz_, Oct 22 2017