A114485 Number of decimal digits in !(10^n), where !x is the subfactorial.

7, 158, 2568, 35660, 456574, 5565709, 65657059, 756570556, 8565705523, 95657055186, 1056570551816, 11565705518103, 125657055180974, 1356570551809682, 14565705518096756, 155657055180967490

Offset: 1

Author

Eric W. Weisstein, Nov 30 2005

Keywords

• nonn
• base

Comments

Entries where the number of digits of the subfactorial (here) is one less than the number of digits of the factorial (A061010) are indicated by A214004. [Carl R. White, Jun 30 2012]

Links

• Carl R. White, Table of n, a(n) for n = 1..200
• Eric Weisstein's World of Mathematics, Subfactorial

Crossrefs

Cf. A000166, A061010.

Formula

a(n) = 10^n*(n - 1/log(10)) + n/2 + O(1). [Arkadiusz Wesolowski, Jan 20 2012]

Extensions

More terms from Carl R. White, Jun 30 2012