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A097173 as a simple table

na(n)
10
22
30
448
5120
64560
735700
81048992
915514128
10456726240
1110073339100
12323266492560
139361060088952
14336767513038320
1511913610172869860
16482920107426039360
1719998225191360977440
18909512248720724321472

[0,2,0,48,120,4560,35700,1048992,15514128,
 456726240,10073339100,323266492560,9361060088952,
 336767513038320,11913610172869860,
 482920107426039360,19998225191360977440,
 909512248720724321472]