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Harmless numbers: numbers without a, h, m or r.
0

%I #7 Nov 28 2024 19:08:57

%S 1,2,5,6,7,9,10,11,12,15,16,17,19,20,21,22,25,26,27,29,50,51,52,55,56,

%T 57,59,60,61,62,65,66,67,69,70,71,72,75,76,77,79,90,91,92,95,96,97,99,

%U 1000000000,1000000001,1000000002

%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.

%K easy,nonn,word

%O 1,2

%A _Michael Joseph Halm_, Aug 23 2002

%E Numbers containing 8 (eight) removed by _Sean A. Irvine_, Nov 28 2024