%I #5 Dec 05 2013 19:56:03

%S 1,2,6,96,5040,1829520,2162160,243243000,49989139200,3821522664960,

%T 24638764550400,310331105884800,48573564399360000,

%U 1589664086049506987520000,11157385862665072737907200

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

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

%Y Cf. A081991, A081993.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, Apr 05 2003

%E More terms from _David Wasserman_, Jul 28 2004