A029587 a(n) = A029571(n) / 6.

0, 0, 0, 0, 1, 5, 30, 210, 1470, 13230, 132300, 1455300, 17671500, 229729500, 3216213000, 48243195000, 771323553000, 13112500401000, 236025007218000, 4484475137142000, 89692802577378000, 1883548854124938000, 41438074790748636000, 953075720187218628000

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Crossrefs

Cf. A029571.