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 A279294 #4 Dec 09 2016 15:21:05 %S A279294 1,14,597,11486,265354,5307274,110325975,2250025170,46909998946, %T A279294 990648740298,21419845540563,473829924582378,10757656204264520, %U A279294 250739074393237162,6005432933786523655,147819656394632180730,3739797338380838531829,97237232835306526768108 %N A279294 Number of permutations of [n] having exactly five (possibly overlapping) doubledescents. %H A279294 Alois P. Heinz, <a href="/A279294/b279294.txt">Table of n, a(n) for n = 7..461</a> %Y A279294 Column k=5 of A162975. %K A279294 nonn %O A279294 7,2 %A A279294 _Alois P. Heinz_, Dec 09 2016