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 A127563 #6 Apr 09 2014 10:12:25
%S A127563 1,3,6,12,16,24,36,54,64,80,100,125,144,171,180,216,240,270,285,320,
%T A127563 342,375,380,418,432,475,486,512,525,532,560,594,625,646,663,686,715,
%U A127563 754,798,840,880,912,957,1008,1045,1092,1140,1190,1242,1288,1344,1404,1445
%N A127563 a(n) = sum{k=1 to n} A127562(k).
%C A127563 a(n) divides A127564(n).
%Y A127563 Cf. A127562, A127564.
%K A127563 nonn
%O A127563 1,2
%A A127563 _Leroy Quet_, Jan 18 2007
%E A127563 Extended by _Ray Chandler_, Jan 22 2007