A233027 a(n) is number of nonnegative integers not exceeding n which have no decimal digits occurring in n and respectively prime to n.

0, 0, 1, 2, 2, 4, 2, 6, 4, 6, 3, 8, 2, 7, 3, 4, 4, 7, 2, 7, 8, 3, 9, 15, 7, 14, 9, 10, 9, 15, 6, 15, 8, 16, 11, 17, 8, 23, 11, 15, 16, 23, 8, 23, 18, 18, 19, 31, 13, 27, 20, 19, 14, 31, 10, 36, 17, 24, 19, 39, 16, 39, 24, 22, 25, 33, 18, 47, 28, 31, 18, 47, 15

Offset: 0

Author

Vladimir Shevelev, Dec 03 2013

Keywords

• nonn
• base

Examples

			Let n=12. Numbers which are prime to 12 are 1,5,7,11. However, 1 and 11 are not acceptable by the condition. So, a(12)=2.
		

Links

• Peter J. C. Moses, Table of n, a(n) for n = 0..9999

Crossrefs

Cf. A000010, A232897.

Extensions

More terms from Peter J. C. Moses