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A159907 as a simple table

na(n)
12
224
34320
44680
526208
68910720
717428320
820427264
991963648
10197064960
118583644160
1210200236032
1321857648640
1457575890944
1557629644800
16206166804480
1717116004505600
181416963251404800
1915338300494970880

[2,24,4320,4680,26208,8910720,17428320,20427264,
 91963648,197064960,8583644160,10200236032,
 21857648640,57575890944,57629644800,206166804480,
 17116004505600,1416963251404800,15338300494970880]