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A005964 as a simple table

na(n)
10
21
31
43
59
632
7133
8681
93893
1024809
11169206
121214462
139034509
1469093299
15539991437

[0,1,1,3,9,32,133,681,3893,24809,169206,1214462,
 9034509,69093299,539991437]