The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #3 May 01 2013 21:13:45
%S 1,2,3,5,10,19,20,30,1000,2000,3000
%N Numbers with vertical symmetry when expressed as Roman numerals.
%K nonn
%O 1,2
%A _Claudio Meller_, Oct 22 2009
%E Edited by _N. J. A. Sloane_, Oct 25 2009