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

0,4

Links

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

Example

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.

Crossrefs

Cf. A000010, A232897.

Sequence in context: A126606 A285699 A278229 * A262550 A077651 A004085

Adjacent sequences: A233024 A233025 A233026 * A233028 A233029 A233030

Keyword

nonn,base

Author

Vladimir Shevelev, Dec 03 2013

Extensions

More terms from Peter J. C. Moses

Status

approved