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 A273736 #5 May 28 2016 20:08:01 %S A273736 1,1,1,1,1,1,1,1,1,2,3,4,5,6,7,8,9,18,27,36,45,54,63,72,81,162,243, %T A273736 324,405,486,567,648,729,1458,2187,2916,3645,4374,5103,5832,6561, %U A273736 13122,19683,26244,32805,39366,45927,52488,59049,118098,177147,236196,295245 %N A273736 Number of permutations of n elements divided by the number of 8-ary heaps on n+1 elements. %H A273736 Alois P. Heinz, <a href="/A273736/b273736.txt">Table of n, a(n) for n = 0..1000</a> %H A273736 Wikipedia, <a href="https://en.wikipedia.org/wiki/D-ary_heap">D-ary heap</a> %F A273736 a(n) = A000142(n)/A273695(n+1). %Y A273736 Column k=8 of A273730. %Y A273736 Cf. A000142, A273695. %K A273736 nonn %O A273736 0,10 %A A273736 _Alois P. Heinz_, May 28 2016