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A126149 as a simple table

na(n)
10
21
31
43
513
664
7470
84921
983997
102411453
11123544541
1211537642646
132013389528672

[0,1,1,3,13,64,470,4921,83997,2411453,123544541,
 11537642646,2013389528672]