A061250 a(n) = (n-2)*(n-1)^n.

0, 0, 8, 162, 3072, 62500, 1399680, 34588806, 939524096, 27894275208, 900000000000, 31384283767210, 1176925259169792, 47248516628391468, 2022385242251558912, 91957716979980468750, 4427218577690292387840, 225009351233083599856144, 12040000871040740498079744

Offset: 1

Author

Gero Burghardt (gerogoestohollywood(AT)yahoo.de), Jun 01 2001

Keywords

• nonn
• easy

Links

• Milan Janjic, Enumerative Formulas for Some Functions on Finite Sets

Crossrefs

Cf. A143857. [From Reinhard Zumkeller, Jul 23 2010]

Programs

Mathematica

Table[(n-2)*(n-1)^n,{n,20}] (* Vladimir Joseph Stephan Orlovsky, Jan 29 2012 *)

Extensions

More terms from Klaus Brockhaus and Larry Reeves (larryr(AT)acm.org), Jun 03 2001