login

A288971 as a simple table

na(n)
00
10
22
316
4112
5848
67008
763648
8635040
96915168
1081757440
111044161280
1214334076800
13210595524480

[0,0,2,16,112,848,7008,63648,635040,6915168,
 81757440,1044161280,14334076800,210595524480]