A180408 Nonzero digits not used in n.

123456789, 23456789, 13456789, 12456789, 12356789, 12346789, 12345789, 12345689, 12345679, 12345678, 23456789, 23456789, 3456789, 2456789, 2356789, 2346789, 2345789, 2345689, 2345679, 2345678, 13456789, 3456789, 13456789, 1456789, 1356789, 1346789, 1345789

Offset: 0

Author

Dominick Cancilla, Sep 02 2010

Keywords

• easy
• nonn
• base

Examples

			a(13) = 123456789 without 1 and 3 = 2456789.
a(123456789) = 0 (by definition).
		

Programs

Mathematica

newn[n_]:=FromDigits[Complement[Range[9],IntegerDigits[n]]]; Table[newn[i],{i,50}] (* Harvey P. Dale, Nov 21 2010 *)

Formula

a(n) = 123456789 after removing any digits that appear in n. If n uses all digits, then a(n) = 0.

Extensions

More terms from Harvey P. Dale, Nov 21 2010