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A220471 as a simple table

na(n)
11
22
39
440
5238
61564
711807
898529
9904318
109006364
1196709332
121110858977
1313581942434
14175844515544

[1,2,9,40,238,1564,11807,98529,904318,9006364,
 96709332,1110858977,13581942434,175844515544]