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A296516 as a simple table

na(n)
01
11
22
35
414
540
6111
7300
8797
92098
105499
1114389
1237634
1398435
14257516
15673827
161763460
174615686
1812082137
1931628294

[1,1,2,5,14,40,111,300,797,2098,5499,14389,37634,
 98435,257516,673827,1763460,4615686,12082137,
 31628294]