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A307663 as a simple table

na(n)
11
26
341
4329
53090
633654
7420792
85981688
995782320
101712555280
1133909364800
12737868052800
1317521164259200
14451126883894400
1512522623670144000
16372847351488998400
1711853064556660275200
18400718191717647820800
1914354714544806716416000
20543129329390299739136000
2121642934280974058207232000

[1,6,41,329,3090,33654,420792,5981688,95782320,
 1712555280,33909364800,737868052800,
 17521164259200,451126883894400,12522623670144000,
 372847351488998400,11853064556660275200,
 400718191717647820800,14354714544806716416000,
 543129329390299739136000,
 21642934280974058207232000]