A173483 a(n) = the largest (n+1)-digit number ending in n zeros that is divisible by n, else 0.

90, 900, 9000, 90000, 900000, 9000000, 70000000, 900000000, 9000000000, 90000000000, 0, 9000000000000, 0, 700000000000000, 9000000000000000, 90000000000000000, 0, 9000000000000000000, 0, 900000000000000000000

Offset: 1

Author

Jaroslav Krizek, Feb 19 2010

Keywords

• nonn
• base

Comments

See A173478 - A173486.

Formula

If A006530(n) > 7, then a(n)=0. [From R. J. Mathar, Mar 12 2010]

Extensions

More terms from R. J. Mathar, Mar 12 2010