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 A320680 #4 Oct 19 2018 10:26:20 %S A320680 0,2,7,13,31,59,110,191,322,497,743,1053,1469,1998,2698,3574,4696, %T A320680 6051,7710,9663,11998,14718,17957,21715,26130,31196,37041,43632,51121, %U A320680 59468,68839,79212,90775,103504,117648,133203,150449,169407,190387,213403,238807 %N A320680 Number of 5-element subsets of [n] having a prime element sum. %H A320680 Alois P. Heinz, <a href="/A320680/b320680.txt">Table of n, a(n) for n = 5..500</a> %Y A320680 Column k=5 of A282516. %K A320680 nonn %O A320680 5,2 %A A320680 _Alois P. Heinz_, Oct 19 2018