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A068102 as a simple table

na(n)
11
25
332
4262
52644
631848
7446592
87150512
9128749536
102575353600
1156661408000
121359913708800
1335358235430400
14990036819072000
1529701191750451200
16950439443688806400
1732314962008209305600
181163338987982963097600
1944206887945726303436800
201768275639474152546304000

[1,5,32,262,2644,31848,446592,7150512,128749536,
 2575353600,56661408000,1359913708800,
 35358235430400,990036819072000,29701191750451200,
 950439443688806400,32314962008209305600,
 1163338987982963097600,44206887945726303436800,
 1768275639474152546304000]