A030850 [ exp(2/21)*n! ].

1, 2, 6, 26, 131, 791, 5543, 44348, 399139, 3991392, 43905314, 526863779, 6849229138, 95889207938, 1438338119083, 23013409905337, 391227968390730, 7042103431033155, 133799965189629948, 2675999303792598976

Offset

1,2

Links

Table of n, a(n) for n=1..20.

Mathematica

With[{c=Exp[2/21]}, Floor[c*Range[20]!]] (* Harvey P. Dale, Jan 20 2013 *)

Crossrefs

Sequence in context: A030937 A030827 A030947 * A030951 A030876 A159667

Adjacent sequences: A030847 A030848 A030849 * A030851 A030852 A030853

Keyword

nonn

Author

Simon Plouffe

Status

approved