A076219 Smallest positive integer m such that m! begins with n in base 10.

1, 2, 9, 8, 7, 3, 6, 14, 96, 27, 22, 5, 15, 42, 25, 89, 69, 76, 63, 16, 87, 113, 54, 4, 23, 30, 205, 85, 34, 28, 62, 164, 41, 245, 17, 9, 36, 128, 11, 8, 185, 53, 351, 73, 369, 118, 12, 265, 129, 7, 21, 38, 235, 66, 46, 258, 81, 597, 279, 43, 72, 13, 559, 18, 203, 120, 311

Offset

1,2

Links

Table of n, a(n) for n=1..67.

Example

We have a(5) = 7 since 7! = 5040 and no smaller factorial number begins with 5 in base 10.

Crossrefs

Apart from leading term, identical to A018799.

Sequence in context: A192599 A021081 A018799 * A077601 A090930 A346429

Adjacent sequences: A076216 A076217 A076218 * A076220 A076221 A076222

Keyword

nonn,base

Author

Lekraj Beedassy, Nov 04 2002

Extensions

More terms from Lambert Klasen (lambert.klasen(AT)gmx.de), Jan 13 2005

Status

approved