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

Author

Lekraj Beedassy, Nov 04 2002

Keywords

• nonn
• base

Examples

			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.

Extensions

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