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A002904 Delete all letters except c,d,i,l,m,v,x from n then read as Roman numeral if possible, otherwise 0. 3

%I

%S 0,0,0,0,4,9,5,1,1,0,55,55,1,0,1,9,5,1,1,0,0,0,0,0,4,9,5,1,1,1,1,1,1,1

%N Delete all letters except c,d,i,l,m,v,x from n then read as Roman numeral if possible, otherwise 0.

%Y See A092302 and A121305 for other versions.

%K nonn,word

%O 1,5

%A J. H. Conway (conway(AT)math.princeton.edu)

%E Ambiguous or ill-defined beyond the last term shown.

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Last modified May 25 10:17 EDT 2013. Contains 225647 sequences.