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A201189 as a simple table

na(n)
10
20
31
46
524
680
7239
8665
91756
104459
1110978
1226369
1362066
14143647
15327756
16738794
171647917
183642331
197986246
2017387367
2137618098
2280932917
23173248897
24369190346
25783527077
261656712522
273491205863
287334452733
2915365201271
3032106206735

[0,0,1,6,24,80,239,665,1756,4459,10978,26369,
 62066,143647,327756,738794,1647917,3642331,
 7986246,17387367,37618098,80932917,173248897,
 369190346,783527077,1656712522,3491205863,
 7334452733,15365201271,32106206735]