A079005 Exponential transform of unsigned Lah-triangle |A008297(n,k)|.

1, 2, 2, 6, 12, 5, 24, 72, 60, 15, 120, 480, 600, 300, 52, 720, 3600, 6000, 4500, 1560, 203, 5040, 30240, 63000, 63000, 32760, 8526, 877, 40320, 282240, 705600, 882000, 611520, 238728, 49112, 4140, 362880, 2903040, 8467200, 12700800, 11007360

Offset

1,2

Links

Table of n, a(n) for n=1..41.

N. J. A. Sloane, Transforms

Formula

E.g.f.: exp(exp(x*y/(1-x))-1). a(n, k) = n!/k! * binomial(n-1, k-1) * bell(k) = |A008297(n, k)| * A000110(k).

Example

1; 2,2; 6,12,5; 24,72,60,15; 120,480,600,300,52; ...

Crossrefs

Cf. A055924, A055896, A056860.

Sequence in context: A091764 A335311 A192933 * A281351 A351081 A241669

Adjacent sequences: A079002 A079003 A079004 * A079006 A079007 A079008

Keyword

nonn,tabl

Author

Vladeta Jovovic, Feb 01 2003

Status

approved