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 A265727 #20 Jun 17 2024 06:41:48 %S A265727 70,70,836,4030,17272,836,7912,7192,4030,113072,83312,7912,8812312, %T A265727 5830,4199030,9272,91388,10792,23941578736,786208,682592,569494624, %U A265727 555616,539744,15126992,73616,519712 %N A265727 Least primitive weird number, pwn, (A002975) which is divisible by the n-th prime (A000040). %C A265727 No odd weird number exists below 10^21. The search is done on the volunteer computing project yoyo@home. - _Wenjie Fang_, Feb 23 2014 %C A265727 As of Dec 14 2015, there is no known pwn which is divisible by 3. Therefore the offset denotes the third prime number, 5. %H A265727 Douglas E. Iannucci, <a href="http://arxiv.org/abs/1504.02761">On primitive weird numbers of the form 2^k*p*q</a>, arXiv:1504.02761 [math.NT], 2015. %H A265727 Linked In, <a href="https://www.linkedin.com/grp/post/4510047-5820529955682926595">Number Theory, A very big weird number</a> %H A265727 Giuseppe Melfi, <a href="http://dx.doi.org/10.1016/j.jnt.2014.07.024">On the conditional infiniteness of primitive weird numbers</a>, Journal of Number Theory, Vol. 147, Feb 2015, pp. 508-514. %H A265727 Wikipedia, <a href="http://en.wikipedia.org/wiki/Weird_number">Weird number</a>. %e A265727 a(6) is 4030 since it is the first pwn to be divisible by the sixth prime number, 13. 4030 = 13 * 310. %t A265727 (* copy the terms from A002975, assign them equal to 'lst' and then *) f[n_] := Select[lst, Mod[#, Prime@ n] == 0 &][[1]]; Array[f, 27, 3] %Y A265727 Cf. A002975, A258250, A258333, A258374, A258375, A258401, A258882, A258883, A258884, A258885, A265726, A265728. %K A265727 nonn %O A265727 3,1 %A A265727 Douglas E. Iannucci and _Robert G. Wilson v_, Dec 14 2015