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A128321 as a simple table

na(n)
01
11
24
317
498
5622
64512
735373
8300974
92722070
1026118056
11263266346
122780054884
1330586452652
14349724463584
154141218303165
1650678688359190
17639387728054310
188302396672724280
19110754894628585950

[1,1,4,17,98,622,4512,35373,300974,2722070,
 26118056,263266346,2780054884,30586452652,
 349724463584,4141218303165,50678688359190,
 639387728054310,8302396672724280,
 110754894628585950]