A277054 Least k such that n-th repunit times k is a pandigital.

1023456789, 93125079, 9222117, 1110789, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115, 92115

Offset: 1

Author

Andrey Zabolotskiy and Altug Alkan, Sep 26 2016

Keywords

• nonn
• base
• easy

Comments

Starting from n=5, a(n)=A277056(10)=92115, and the corresponding pandigitals are 1023499...989765 (n-5 nines).

a(1)-a(5) constitute row 10 of A277055.

a(n)*A002275(n) is 1023456789, 1024375869, 1023654987, 1234086579, 1023489765, ...

Examples

			a(2) = 93125079 because A002275(2)*93125079 = 11*93125079 = 1024375869 that is a pandigital and 93125079 is the least number with this property.
		

Crossrefs

Cf. A002275, A171102, A277055, A277056, A277057.