A173479 a(n) = the smallest n-digit number ending in n-1 zeros that is divisible by n, else 0.

1, 10, 300, 1000, 10000, 300000, 7000000, 10000000, 900000000, 1000000000, 0, 300000000000, 0, 70000000000000, 300000000000000, 1000000000000000, 0, 900000000000000000, 0, 10000000000000000000, 0, 0, 0, 300000000000000000000000, 1000000000000000000000000, 0, 0, 7000000000000000000000000000, 0

Offset

1,2

Comments

See A173478 - A173486.

Links

Robert Israel, Table of n, a(n) for n = 1..999

Maple

f:= proc(n) local i; for i from 1 to 9 do if i*10^(n-1) mod n = 0 then return i*10^(n-1) fi od: 0 end proc:
map(f, [$1..20]); # Robert Israel, Jan 16 2017

Crossrefs

Sequence in context: A000459 A125288 A217487 * A173478 A069672 A129005

Adjacent sequences: A173476 A173477 A173478 * A173480 A173481 A173482

Keyword

nonn,base

Author

Jaroslav Krizek, Feb 19 2010

Extensions

a(16)-a(29) from Robert Israel, Jan 16 2017

Status

approved