A221532 The number of n-digit numbers whose last k digits are divisible by k for k = 1..n.

10, 45, 150, 756, 1530, 5100, 7301, 38646, 42940, 430263, 391149

Offset: 1

Author

Shyam Sunder Gupta, Aug 07 2013

Keywords

• nonn
• base

Examples

			There are ten one-digit numbers divisible by 1 so a(1)=10.
For two-digit numbers, the ones digit must be such that the two-digit number is divisible by 2 which gives 45 numbers, that is, all even numbers from 10 to 98 to satisfy the requirement. So a(2)=45.
		

Crossrefs

Cf. A164836.