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A020696 as a simple table

na(n)
12
26
38
430
512
6168
716
8270
980
10396
1124
1210920
1328
14720
15768
164590
1736
1831920
1940
2041580
211408
221656
2348
242457000
25312
262268
272240
28104400
2960
305499648
3164
32151470
333264
343780
353456
3676767600
3776
384680
394480
4015343020
4184
4219071360
4388
44372600
45353280
466768

[2,6,8,30,12,168,16,270,80,396,24,10920,28,720,
 768,4590,36,31920,40,41580,1408,1656,48,2457000,
 312,2268,2240,104400,60,5499648,64,151470,3264,
 3780,3456,76767600,76,4680,4480,15343020,84,
 19071360,88,372600,353280,6768]