A319542 Record values in A039932.

1, 51, 531, 2571, 15703, 90271, 102053, 530102, 4550102, 4570102, 4580102, 22900501, 134003006, 1002003005, 5001002003, 5003001002, 30005001002, 30005002001, 200030005001, 1000200030005, 5000100020003, 5000300010002

Offset: 1

Author

David Radcliffe, Sep 22 2018

Keywords

• nonn
• base

Comments

The positive integer n belongs to the sequence iff there exists a positive integer k so that each of the first k multiples of n contains the decimal digit 1, but no smaller n has this property for the same value of k.

Examples

			51 is a term because the first three multiples of 51 (51, 102, 153) all contain the digit 1, and 51 is the least positive integer with this property.
		

Crossrefs

Cf. A319548, A039932, A317173. Subset of A011531.