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A345245 as a simple table

na(n)
11
21
34
410
536
6135
7504
82000
98072
1033099
11138132
12582930
132485412
1410692219
1546340984
16202175344
17887175352
183913032212
1917338327848
2077141235796
21344491008296
221543591834950
236937783312048
2431270131096820
25141305878384704
26640065923118435
272905664234243052
2813217615913137250

[1,1,4,10,36,135,504,2000,8072,33099,138132,
 582930,2485412,10692219,46340984,202175344,
 887175352,3913032212,17338327848,77141235796,
 344491008296,1543591834950,6937783312048,
 31270131096820,141305878384704,640065923118435,
 2905664234243052,13217615913137250]