A073416 Harmless numbers: numbers without a, h, m or r.

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, 57, 59, 60, 61, 62, 65, 66, 67, 69, 70, 71, 72, 75, 76, 77, 79, 90, 91, 92, 95, 96, 97, 99, 1000000000, 1000000001, 1000000002

Offset: 1

Author

Michael Joseph Halm, Aug 23 2002

Keywords

• easy
• nonn
• word

Comments

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.

Examples

			a(3) = 5 because 5 is the third integer without an a, h, m or r.
		

References

• M. J. Halm, Sequences (Re)discovered, Mpossibilities 81 (Aug. 2002).

Crossrefs

Cf. A039135, A072957.

Extensions

Numbers containing 8 (eight) removed by Sean A. Irvine, Nov 28 2024