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 A015698 #10 Mar 30 2012 17:20:41 %S A015698 0,0,0,0,0,0,2,3,6,6,32,33,105,114,128,157,385,400,831,886,1001,1076, %T A015698 2004,2074,2817,3022,3655,3880,6379,6449,10020,10978,12063,12791, %U A015698 14417,14767,21746,22977,25038,25860,36660,37110,51088,53449,56199 %N A015698 Number of 5-tuples of different integers from [ 1,n ] with no common factors among pairs. %Y A015698 Column 5 of triangle A186974. Partial sums of A186976. %K A015698 nonn %O A015698 1,7 %A A015698 _Olivier Gérard_