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 A330616 #21 Mar 06 2020 03:18:12 %S A330616 252,272,323,414,434,444,464,494,525,555,575,585,595,636,646,656,666, %T A330616 676,686,696,767,777,828,848,868,888,949,969,989,999,2002,2112,2772, %U A330616 2992,3003,3553,4004,4224,4554,4774,4884,5005,5115,5225,5775,6006,6336,6996,7007 %N A330616 Palindromes that are the product of 2 non-palindromic numbers. %H A330616 Chai Wah Wu, <a href="/A330616/b330616.txt">Table of n, a(n) for n = 1..10000</a> %e A330616 272=16*17 is a term but 282=6*47 is not a term. %t A330616 seqQ[n_] := PalindromeQ[n] && AnyTrue[Divisors[n], ! PalindromeQ[#] && ! PalindromeQ[n/#] &]; Select[Range[7007], seqQ] (* _Amiram Eldar_, Mar 01 2020 *) %Y A330616 Subsequence of A084325 (palindromes such that at least one divisor is non-palindromic). %Y A330616 Cf. A062687 (numbers all of whose divisors are palindromic). %K A330616 nonn,base %O A330616 1,1 %A A330616 _Bernard Schott_, Mar 01 2020 %E A330616 More terms from _Amiram Eldar_, Mar 01 2020