%N Harmless numbers: numbers without a, h, m or r.
%C These number differ from A039135 (numbers with same number of 3's and 4's) only in the 17th term and from A072957 (urban numbers without r or u) in the 64th term.
%D M. J. Halm, Sequences (Re)discovered, Mpossibilities 81 (Aug. 2002).
%e a(3) = 5 because 5 is the third integer without an a, h, m or r.
%Y Cf. A039135, A072957.
%A _Michael Joseph Halm_, Aug 23 2002