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 A161732 #3 May 01 2013 21:09:56
%S A161732 4,6,8,9,22,33,44,55,66,77,88,99,121,202,242,252,262,303,343,363,393,
%T A161732 404,484,505,525,606,616,626,686,707,808,909,939,1111,1331,1441,1661,
%U A161732 1991,2112,2222,2662,2772,2882,3333,3443,3773,3883,3993,4224,4444,5445
%N A161732 Fixed points of the TITO operation (A161594) that are also composite palindromes.
%C A161732 This sequence is a proper superset of A046351 (palindromic composite numbers with only palindromic prime factors). The smallest number that doesn't belong to A046351 is 72927. The numbers that are in this sequence and are not in A046351 are given in A161730.
%H A161732 T. Khovanova, <a href="http://blog.tanyakhovanova.com/?p=144">Turning Numbers Inside Out</a> [From _Tanya Khovanova_, Jul 07 2009]
%t A161732 reversepower[{n_, k_}] := FromDigits[Reverse[IntegerDigits[n]]]^k f[n_] := FromDigits[ Reverse[IntegerDigits[Times @@ Map[reversepower, FactorInteger[n]]]]] rev[n_] := FromDigits[Reverse[IntegerDigits[n]]] Select[Range[10000], f[ # ] == # && rev[ # ] == # && ! PrimeQ[ # ] &]
%Y A161732 Cf. A161594, A161597, A161598, A161600, A046351
%K A161732 base,nonn
%O A161732 1,1
%A A161732 _Tanya Khovanova_, Jun 17 2009
%E A161732 Edited by _N. J. A. Sloane_, Jun 23 2009