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A061213 as a simple table

na(n)
12
24
319
4181
52701
656701
71587601
857153601
92571912001
10141455160001
119336040560001
12728211163680001
1366267215894880001
146958057668962400001
15834966920275488000001
16113555501157466368000001

[2,4,19,181,2701,56701,1587601,57153601,
 2571912001,141455160001,9336040560001,
 728211163680001,66267215894880001,
 6958057668962400001,834966920275488000001,
 113555501157466368000001]