A101612 n! * Sum[k=floor(n/2)..n, 1/k].

3, 11, 26, 154, 684, 5508, 35664, 361296, 3068640, 37383840, 392722560, 5584394880, 69878833920, 1135360800000, 16484477184000, 301158902016000, 4976250951168000, 100951141777920000, 1870345490614272000

Offset: 2

Author

Ralf Stephan, Dec 10 2004

Keywords

• nonn
• easy

Crossrefs

Cf. A101609, A101610, A101611, A101613, A000254, A046673, A052517.