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 A378530 #8 Dec 02 2024 10:10:47 %S A378530 6,20,28,88,104,272,304,368,464,496,650,1184,1312,1376,1504,1696,1888, %T A378530 1952,3770,4288,4544,4672,5056,5312,5696,6208,6464,6592,6808,6848, %U A378530 6976,7144,7232,8056,8128,8925,10744,11096,13192,13736,14008,14552,14824,15368,16768,17536,17792,17816,19072,19328,20096,20864,21376,22144 %N A378530 Numbers which can be written in precisely one way as sum of a subset of their proper divisors and that have exactly one subset of their divisors such that the complement has the same sum. %H A378530 <a href="/index/O#opnseqs">Index entries for sequences where odd perfect numbers must occur, if they exist at all</a> %Y A378530 Intersection of A064771 and A083209. %Y A378530 Positions of 2's in A378604. %Y A378530 Cf. A000396 (subsequence), A378529 (characteristic function). %K A378530 nonn %O A378530 1,1 %A A378530 _Antti Karttunen_, Dec 01 2024