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Reversible Lynch-Bell numbers.
0

%I #2 Mar 30 2012 17:36:44

%S 1,2,3,4,5,6,7,8,9,216,612,2136,2196,2316,2364,2916,4236,4632,4896,

%T 6132,6192,6312,6324,6912,6984,21384,42816,48312,61248,61824,84216,

%U 213648,213864,213984,219384,234168,234816,236184,238416,291384,293184,428136,468312,481392,481632,483192,483216,483912,489312,612384,614328,614832,618432,631248,631824,823416,842136,846312,861432,6379128,8219736

%N Reversible Lynch-Bell numbers.

%C There are 61 terms; all the multi-digit terms are even.

%e a(60)=6379128 and a(61)=8219736 because both 6379128 and its reversal, 8219736, are Lynch-Bell numbers (A115569) -- and there are no intervening (or indeed any other) 7-digit such terms.

%Y Cf. A115569.

%K base,fini,full,nonn

%O 1,2

%A _Rick L. Shepherd_, Apr 05 2006