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A009966 as a simple table

na(n)
01
122
2484
310648
4234256
55153632
6113379904
72494357888
854875873536
91207269217792
1026559922791424
11584318301411328
1212855002631049216
13282810057883082752
146221821273427820544
15136880068015412051968
163011361496339065143296
1766249952919459433152512
181457498964228107529355264
1932064977213018365645815808
20705429498686404044207947776

[1,22,484,10648,234256,5153632,113379904,
 2494357888,54875873536,1207269217792,
 26559922791424,584318301411328,12855002631049216,
 282810057883082752,6221821273427820544,
 136880068015412051968,3011361496339065143296,
 66249952919459433152512,1457498964228107529355264,
 32064977213018365645815808,
 705429498686404044207947776]