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A190790 as a simple table

na(n)
01
11
22
36
418
558
6198
7696
82506
99205
1034344
11129792
12495834
131911640
147428444
1529064650
16114404410
17452719183
181799994588
197187148262
2028807364008
21115865980972
22467497031164
231891710323324
247675031497682
2531215088847239

[1,1,2,6,18,58,198,696,2506,9205,34344,129792,
 495834,1911640,7428444,29064650,114404410,
 452719183,1799994588,7187148262,28807364008,
 115865980972,467497031164,1891710323324,
 7675031497682,31215088847239]