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A220491
The smallest n-digit number whose last k digits are divisible by k for k = 1..n.
2
0, 10, 102, 1000, 10000, 102000, 1000300, 10000000, 102000600, 1000000000, 10000108360, 102000060480, 1000006930000, 10000063165960, 102000042276960, 1000000000000000, 10000000141981840, 102000006021375360, 1000000081060819840, 10000000000000000000
OFFSET
1,2
EXAMPLE
There are ten one-digit numbers divisible by 1, and the smallest is 0, so a(1) = 0.
For two-digit numbers, the ones digit must be divisible by 2 which gives 10 as the smallest to satisfy the requirement. So a(2) = 10.
CROSSREFS
Cf. A164836.
Sequence in context: A203569 A305712 A053041 * A088644 A080502 A078283
KEYWORD
nonn,base
AUTHOR
Shyam Sunder Gupta, Aug 07 2013
EXTENSIONS
More terms from Jinyuan Wang, Mar 09 2020
STATUS
approved