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 A371951 #6 Apr 16 2024 14:03:31 %S A371951 1,70,97930,597730,77420770,459940810,11835050710 %N A371951 a(n) is the least number whose aliquot sequence begins with exactly n weird numbers (A006037), or -1 if no such numbers exists. %C A371951 a(7) > 10^11, if it exists. %H A371951 Wikipedia, <a href="https://en.wikipedia.org/wiki/Aliquot_sequence">Aliquot sequence</a>. %H A371951 Wikipedia, <a href="https://en.wikipedia.org/wiki/Weird_number">Weird number</a>. %e A371951 The iterations of A001065 over the terms a(1)..a(6): %e A371951 n | a(n) | Iterations %e A371951 --+-------------+-------------------------------------------------------------- %e A371951 1 | 70 | 70 %e A371951 2 | 97930 | 97930 -> 103670 %e A371951 3 | 597730 | 597730 -> 632030 -> 668290 %e A371951 4 | 77420770 | 77420770 -> 82246430 -> 86946370 -> 92477630 %e A371951 5 | 459940810 | 459940810 -> 487175990 -> 515884810 -> 546184310 -> 582130570 %e A371951 6 | 11835050710 | 11835050710 -> 12515648810 -> 13235404630 -> 13991713610 %e A371951 | | -> 14797250230 -> 15649107530 %Y A371951 Cf. A001065, A006037, A371950. %K A371951 nonn,hard,more %O A371951 0,2 %A A371951 _Amiram Eldar_, Apr 14 2024