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 A075728 #17 Nov 03 2013 08:13:38
%S A075728 1,2,4,6,10,12,16,18,22,28,30,36,40,42,46,52,58,60,66,70,72,78,82,88,
%T A075728 96,100,102,106,108,112,120,126,130,136,138,148,150,156,162,166,172,
%U A075728 178,186,190,192,196,198,210,222,226,228,232,238,264,268,270,276,280,282,292,306
%N A075728 Records in abs(sigma(n)-2*n) (absolute value of A033879).
%C A075728 RECORDS transform of |A033879|.
%H A075728 R. J. Mathar and Donovan Johnson, <a href="/A075728/b075728.txt">Table of n, a(n) for n = 1..1000</a> (first 220 terms from R. J. Mathar)
%H A075728 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>
%o A075728 (PARI) lista(nn) = {rec = -1; for (n=1, nn, d = abs(sigma(n) - 2*n); if (d > rec, print1(d, ", "); rec = d;););} \\ _Michel Marcus_, Nov 02 2013
%Y A075728 Cf. A033879, A074918. Different from A006093.
%K A075728 nonn
%O A075728 1,2
%A A075728 _N. J. A. Sloane_, Oct 03 2002
%E A075728 Corrected name, _Michel Marcus_, Nov 02 2013