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A180420 as a simple table

na(n)
11
22
312
4160
54592
6276496
734174592
88570174016
94335215019520
104408454839564672
118992935435667848448
1236753720073439398166016
13300717909357395506394597376
144923649248081508021291300507648
15161279005396471404160636537186082816
1610567483324648990167101852566698802679808

[1,2,12,160,4592,276496,34174592,8570174016,
 4335215019520,4408454839564672,
 8992935435667848448,36753720073439398166016,
 300717909357395506394597376,
 4923649248081508021291300507648,
 161279005396471404160636537186082816,
 10567483324648990167101852566698802679808]