The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #9 Nov 30 2013 11:48:37
%S 6,13,16,25,31,34,40,43,44,52,61,70,77,104,111,115,145,158,200,202,
%T 203,214,244,250,257,302,356,399,401,412,414,442,455,498,500,505,511,
%U 519,529,541,554,597,610,618,626,628,640,653,656,686,752,795,797,816,826
%N Numbers n such that there are (presumably) seven palindromes in the Reverse and Add! trajectory of n.
%C For terms < 2000 each palindrome is reached from the preceding one or from the start in at most 24 steps; after the presumably last one no further palindrome is reached in 2000 steps.
%H <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a>
%e The trajectory of 25 begins 25, 77, 154, 605, 1111, 2222, 4444, 8888, 17776, 85547, 160105, 661166, 1322332, 3654563,7309126, ...; at 7309126 it joins the (presumably) palindrome-free trajectory of A063048(7) = 10577, hence 77, 1111, 2222, 4444, 8888, 661166 and 3654563 are the seven palindromes in the trajectory of 25 and 25 is a term.
%Y Cf. A023108, A023109, A065001, A070742, A077594.
%K nonn,base
%O 1,1
%A _Klaus Brockhaus_, Nov 20 2003