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 A046329 #12 Dec 24 2021 15:07:25 %S A046329 8,44,66,99,171,212,222,242,282,292,333,343,363,404,434,474,494,555, %T A046329 575,595,606,646,747,777,909,969,1001,1221,1331,1551,1771,2222,2882, %U A046329 3333,3553,4334,4994,5335,5555,5665,5885,5995,6226,6446,6886,7337,7557 %N A046329 Palindromes with exactly 3 prime factors (counted with multiplicity). %H A046329 John Cerkan, <a href="/A046329/b046329.txt">Table of n, a(n) for n = 1..10000</a> %t A046329 Select[Range[8000],PalindromeQ[#]&&PrimeOmega[#]==3&] (* _Harvey P. Dale_, Dec 24 2021 *) %Y A046329 Cf. A014612, A046316, A046409. %K A046329 nonn,base %O A046329 1,1 %A A046329 _Patrick De Geest_, Jun 15 1998