A220490 The largest n-digit number whose last k digits are divisible by k for k = 1..n.

9, 98, 996, 9996, 99960, 999960, 9999780, 99999360, 999999360, 9999999360, 99999951480

Offset

1,1

Links

Table of n, a(n) for n=1..11.

Example

There are ten one-digit numbers divisible by 1 and the largest is 9 so a(1)=9.
For two-digit numbers, the ones digit must make it divisible by 2, which gives 98 as the largest to satisfy the requirement. So a(2)=98.

Crossrefs

Cf. A164836.

Sequence in context: A057933 A064617 A225608 * A024115 A066557 A289214

Adjacent sequences: A220487 A220488 A220489 * A220491 A220492 A220493

Keyword

nonn,base

Author

Shyam Sunder Gupta, Aug 07 2013

Status

approved