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 A046378 #11 Nov 06 2015 04:08:51 %S A046378 88,484,525,686,808,2662,3773,3993,4444,6666,9999,14641,24442,34643, %T A046378 36663,40804,52525,134431,224422,336633,1234321,1596951,2060602, %U A046378 3090903,11333311,14699641,22888822,66888866,104060401,125888521,134969431,367888763,413979314 %N A046378 Palindromes with exactly 4 palindromic prime factors (counted with multiplicity). %H A046378 Lars Blomberg, <a href="/A046378/b046378.txt">Table of n, a(n) for n = 1..320</a>, terms < 10^16. %e A046378 The palindrome 1596951 is a term since it has 4 factors 3^2 191 929, all palindromic. %Y A046378 Cf. A046330, A046410. %K A046378 nonn,base %O A046378 1,1 %A A046378 _Patrick De Geest_, Jun 15 1998 %E A046378 More terms from _Lars Blomberg_, Nov 06 2015