A109631 Smallest number m such that n divides (10's complement factorial of m).

1, 2, 1, 2, 5, 2, 3, 2, 1, 5, 12, 2, 22, 3, 5, 4, 15, 2, 24, 5, 3, 12, 31, 2, 10, 22, 4, 3, 13, 5, 38, 6, 12, 15, 5, 2, 26, 24, 22, 5, 18, 3, 14, 12, 5, 31, 53, 4, 16, 10, 15, 22, 47, 4, 12, 3, 24, 13, 41, 5, 39, 38, 3, 6, 22, 12, 33, 15, 31, 5, 29, 2, 27, 26, 10, 24, 12, 22, 21, 5, 7, 18

Offset

1,2

Comments

Is 374 the only n such that a(n) = a(n+1)?

Links

Table of n, a(n) for n=1..82.

Example

a(7)=3 because 7 divides (10-3)*(10-2)*(10-1) and 7 does not divide (10's complement factorial of k) for k < 3.

Crossrefs

Cf. A002034, A110396.

Sequence in context: A078391 A153206 A144155 * A361399 A337222 A095149

Adjacent sequences: A109628 A109629 A109630 * A109632 A109633 A109634

Keyword

base,nonn

Author

Jason Earls, Aug 03 2005

Status

approved