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 A364293 #10 Jul 26 2023 08:30:04 %S A364293 3,7,15,29,31,59,61,63,119,121,123,125,127,223,239,245,247,249,251, %T A364293 253,255,383,447,479,493,495,497,499,501,503,505,507,509,511,767,895, %U A364293 957,959,989,991,999,1001,1003,1005,1007,1009,1011,1013,1015,1017,1019,1021,1023,1535,1789,1791,1917,1919,1977,1979,1981 %N A364293 Odd numbers k for which A163511(k) <= k. %H A364293 Antti Karttunen, <a href="/A364293/b364293.txt">Table of n, a(n) for n = 1..15157; terms less than 2^23</a> %Y A364293 Odd terms in A364292. %Y A364293 Cf. A000225 (subsequence apart from its two initial terms), A163511, A364294 [= -A364258(a(n))]. %K A364293 nonn %O A364293 1,1 %A A364293 _Antti Karttunen_, Jul 25 2023