A112370 a(n) = Sum_{i=0..n} 3^i*i!.

1, 4, 22, 184, 2128, 31288, 556168, 11578648, 276118168, 7418685208, 221695696408, 7292837066008, 261853926371608, 10189736409290008, 427160800691862808, 19190858693407638808, 919848357543764886808, 46853380798911984534808, 2527264132632795845526808

Offset: 0

Author

N. J. A. Sloane, Dec 02 2005

Keywords

• nonn

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..380

Crossrefs

Cf. A112368.

Programs

Mathematica

Accumulate[Table[3^i (i!),{i,0,20}]] (* Harvey P. Dale, Feb 21 2013 *)