%I A002904
%S A002904 0,0,0,0,4,9,5,1,1,0,55,55,1,0,1,9,5,1,1,0,0,0,0,0,4,9,5,1,1,
%T A002904 1,1,1,1,1
%N A002904 Delete all letters except c,d,i,l,m,v,x from n then read as Roman numeral 
               if possible, otherwise 0.
%Y A002904 See A092302 for another version.
%Y A002904 Sequence in context: A068238 A087369 A021206 this_sequence A121305 A011513 
               A164818
%Y A002904 Adjacent sequences: A002901 A002902 A002903 this_sequence A002905 A002906 
               A002907
%K A002904 nonn,word
%O A002904 1,5
%A A002904 J. H. Conway (conway(AT)math.princeton.edu)
%E A002904 Ambiguous or ill-defined beyond the last term shown.