A081992 a(n) = count of numbers formed using the digits of next n numbers..

1, 2, 6, 96, 5040, 1829520, 2162160, 243243000, 49989139200, 3821522664960, 24638764550400, 310331105884800, 48573564399360000, 1589664086049506987520000, 11157385862665072737907200

Offset

1,2

Links

Table of n, a(n) for n=1..15.

Example

a(4) = 96 = 5! - 4!, numbers formed using digits of 7, 8, 9 and 10.

Crossrefs

Cf. A081991, A081993.

Sequence in context: A035482 A322716 A007870 * A066091 A100704 A357084

Adjacent sequences: A081989 A081990 A081991 * A081993 A081994 A081995

Keyword

base,nonn

Author

Amarnath Murthy, Apr 05 2003

Extensions

More terms from David Wasserman, Jul 28 2004

Status

approved