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 A376857 #13 Oct 12 2024 14:43:47 %S A376857 1,3,5,7,9,15,17,21,25,27,31,35,45,49,51,63,73,75,81,85,93,105,107, %T A376857 119,125,127,135,143,147,153,155,175,189,217,219,225,243,245,255,257, %U A376857 279,289,313,315,321,343,357,365,375,381,405,425,429,441,443,459,465,511,525,527,535 %N A376857 Fixed points of A162742. %C A376857 First differs from A342572 at n = 28. In the present sequence a(28) = 143 = 11 * 13: 11 and 13 are the binary reversals of each other but neither is a binary palindrome, so 143 is not in A342572. %H A376857 Paolo Xausa, <a href="/A376857/b376857.txt">Table of n, a(n) for n = 1..10000</a> %t A376857 A376857Q[k_] := k == Times @@ (IntegerReverse[#1, 2]^#2 & @@@ FactorInteger[k]); %t A376857 Select[Range[1000], A376857Q] %o A376857 (Python) # uses function, imports in A162742 %o A376857 def ok(n): return n > 0 and n == A162742(n) %o A376857 print([k for k in range(536) if ok(k)]) # _Michael S. Branicky_, Oct 07 2024 %Y A376857 Cf. A162742. Supersequence of A342572. %K A376857 nonn,base %O A376857 1,2 %A A376857 _Paolo Xausa_, Oct 07 2024