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 A033945 #14 Jul 08 2025 19:58:42
%S A033945 2,3,5,9,13,14,21,25,33,37,45,57,61,73,81,85,93,105,117,121,133,141,
%T A033945 145,157,165,177,193,201,205,213,217,225,230,253,261,273,277,297,301,
%U A033945 313,325,333,345,357,361,381,385,393,397,421,445,453,457,465,477,481
%N A033945 Record highs in A033885 (3n - sum of divisors of n).
%H A033945 Amiram Eldar, <a href="/A033945/b033945.txt">Table of n, a(n) for n = 1..10000</a>
%t A033945 f[n_] := 3n - DivisorSigma[1, n]; fm = 0; s = {}; Do[f1 = f[n]; If[f1 > fm, fm = f1; AppendTo[s, fm]], {n, 1, 250}]; s (* _Amiram Eldar_, Aug 28 2019 *)
%Y A033945 Cf. A033885, A033946.
%K A033945 nonn,easy
%O A033945 1,1
%A A033945 _N. J. A. Sloane_
%E A033945 More terms from _Asher Auel_, May 05 2000