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 A329419 #11 Nov 30 2019 09:19:47 %S A329419 1,3,5,7,9,15,17,21,27,31,45,51,63,73,85,93,107,119,127,153,189,219, %T A329419 255,257,313,365,381,443,511,765,771,1193,1241,1285,1453,1533,1571, %U A329419 1619,1787,1799,1831,1879,2313,3579,3855,4369,4889,5113,5189,5397,5557,5869 %N A329419 Numbers all of whose divisors are binary palindromes. %C A329419 Subsequence of A163410, and differs from it from n = 65. %H A329419 Amiram Eldar, <a href="/A329419/b329419.txt">Table of n, a(n) for n = 1..10000</a> %e A329419 15 is in the sequence since the binary representations of its divisors, 1, 3, 5, and 15, are all palindromes: 1, 11, 101, and 1111. %t A329419 binPalQ[n_] := PalindromeQ @ IntegerDigits[n, 2]; seqQ[n_] := binPalQ[n] && AllTrue[Most @ Divisors[n], binPalQ]; Select[Range[10^4], seqQ] %Y A329419 Cf. A006995, A062687, A163410. %Y A329419 Supersequence of A016041. %K A329419 nonn,base %O A329419 1,2 %A A329419 _Amiram Eldar_, Nov 29 2019