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 A243864 #31 Dec 24 2024 00:51:11 %S A243864 4,6,10,12,17,19,21,23,27,34,36,39,42,46,48,51,57,61,64,66,69,73,75, %T A243864 78,81,83,85,90,92,95,99,104,108,111,114,116,119,124,126,133,135,137, %U A243864 140,145,148,150,152,157,160,163,165,168,170,173,176,178,186,191,195,198,200,204,206,209,212,216,221,223,225,230,237,239 %N A243864 Positive integers that do not appear in A243700. %C A243864 A positive integer m belongs to this sequence iff A243700(1) + A243700(2) + ... + A243700(m) is not 0 modulo m. %C A243864 Based on an analysis by John Pezzullo of the b-file of 30542 terms it appears that a(n) is growing like c*n, where c is approximately 3; see the link. - _Alexander R. Povolotsky_, Jun 19 2014 %H A243864 Max Alekseyev, <a href="/A243864/b243864.txt">Table of n, a(n) for n = 1..30542</a> (contains all terms below 10^5) %H A243864 Éric Angelini, Franklin Adams-Watters, Max Alekseyev, A. E. Povolotsky, N. J. A. Sloane, and R. G. Wilson v, <a href="/A243700/a243700_1.txt">a(n) divides the sum of the first a(n) terms of T</a>, Various postings to the old Sequence Fans Mailing List, assembled by _N. J. A. Sloane_, Dec 24 2024 %H A243864 John Pezzullo, <a href="https://oeis.org/wiki/File:A243864.pdf">Data points approximation analysis</a>. %H A243864 Hugo Pfoertner, <a href="/A243864/a243864.txt">Table of n, a(n) for n = 1..100000</a> %H A243864 Hugo Pfoertner, <a href="/A243864/a243864.png">Plot of a(n) - (3.33879*n^0.998152 + 3.36)</a>, fit of 100000 terms. %H A243864 Hugo Pfoertner, <a href="/A243864/a243864_1.png">Plot of a(n) - (3.2418*n^1.00065 + 307.6)</a>, fit of 530000 terms. %Y A243864 Cf. A243700. %K A243864 nonn %O A243864 1,1 %A A243864 _Max Alekseyev_, Jun 13 2014