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A020060 as a simple table

na(n)
01
10
21
34
419
594
6559
73857
830477
9271252
102685395
1129270806
12348322596
134493361500
1462457724853
15930620100318
1614796859595058
17250066927156481
184476197996101023
1984600142126309335
201683542828313555774

[1,0,1,4,19,94,559,3857,30477,271252,2685395,
 29270806,348322596,4493361500,62457724853,
 930620100318,14796859595058,250066927156481,
 4476197996101023,84600142126309335,
 1683542828313555774]