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 A345051 #16 Dec 08 2023 12:31:39 %S A345051 2,6,9,15,28,496,625,1225,3993,8128,117649,218491,857375,3788435, %T A345051 4259571,33550336,69302975,136410197,200533921,313742585,603439225, %U A345051 1516358753,2563893625,3326174929,5655792025,8589869056,10214476341 %N A345051 Numbers k such that A345048(k) is equal to A345049(k). %C A345051 Numbers k for which A342001(n) * A051709(n) = A173557(n) * A345001(n). %C A345051 Conjecture: Sequence is a disjoint union of A000396 and A166374, i.e., there are no terms of any other kind. %H A345051 <a href="/index/O#opnseqs">Index entries for sequences where odd perfect numbers must occur, if they exist at all</a>. %o A345051 (PARI) isA345051(n) = (0==A345050(n)); %Y A345051 Cf. A051709, A173557, A342001, A345001, A345048, A345049. %Y A345051 Positions of zeros in A345050. %Y A345051 Cf. A000396, A166374 (subsequences). %Y A345051 Cf. also A345003. %K A345051 nonn,more %O A345051 1,1 %A A345051 _Antti Karttunen_, Jun 06 2021 %E A345051 a(21)-a(27) from _Amiram Eldar_, Dec 08 2023