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A153983 as a simple table

na(n)
01
11
22
32
45
511
637
7100
8493
91878
1013284
1174395
12745275
135833759
1483605003
15936808185
1619121040653
17305862769758
188892563071671
19202363258898765
208388963351859194
21272273853161584435
2216084335957849229172

[1,1,2,2,5,11,37,100,493,1878,13284,74395,745275,
 5833759,83605003,936808185,19121040653,
 305862769758,8892563071671,202363258898765,
 8388963351859194,272273853161584435,
 16084335957849229172]