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A125816 as a simple table

na(n)
11
21
314
440
5248
6976
74928
821568
9102272
10463360
112153984
129868288
1345584384
14209588224
15966189056
164447436800
1720489142272
1894347526144
19434564759552
202001299832832
219217376780288
2242450351554560
23195509224472576

[1,1,14,40,248,976,4928,21568,102272,463360,
 2153984,9868288,45584384,209588224,966189056,
 4447436800,20489142272,94347526144,434564759552,
 2001299832832,9217376780288,42450351554560,
 195509224472576]