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A340911 as a simple table

na(n)
01
12
23
36
416
552
6189
7740
83067
913330
1060366
11283504
121376000
136884364
1435440060
15187471028
161018049493
175671511886
1832396788157
19189673021414
201137795705447
216991058047594
2243984892028735
23283267507353084
241866622184589906

[1,2,3,6,16,52,189,740,3067,13330,60366,283504,
 1376000,6884364,35440060,187471028,1018049493,
 5671511886,32396788157,189673021414,1137795705447,
 6991058047594,43984892028735,283267507353084,
 1866622184589906]