%N Numbers n which in decimal have the form imj, where m is the middle digit, with property that j is the reversal of i, and i = m*j.
%C The number i should not end in 0, and m should not equal 0.
%C Suggested by _Amarnath Murthy_.
%C Either i and j are identical palindromes and m is 1, or i is in A031877, j is the corresponding term in A008919, and m is either 4 or 9. - _Charlie Neder_, Mar 08 2019
%e rev(8712) = 2178 and 8712 = 2178*4, so 871242178 is in this sequence. - _Charlie Neder_, Mar 08 2019
%Y Cf. A002113, A008919, A031877. (Possible values of i and j)
%A Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 07 2003
%E Edited by _N. J. A. Sloane_, Oct 25 2009, following discussions on the Sequence Fans Mailing List, circa Apr 17 2009
%E Corrected and extended by _Charlie Neder_, Mar 08 2019