A111416 f(f(n+1))-f(f(n)), where f(m) = m! = A000142(m).

0, 1, 718, 620448401733239439359280

Offset

0,3

Links

Table of n, a(n) for n=0..3.

Crossrefs

Sequence in context: A332171 A220724 A034587 * A252528 A351669 A361345

Adjacent sequences: A111413 A111414 A111415 * A111417 A111418 A111419

Keyword

nonn

Author

N. J. A. Sloane, Nov 12 2005

Extensions

~Definition corrected by N. J. A. Sloane, Feb 14 2018

Status

approved