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A056328 as a simple table

na(n)
10
20
30
41
56
637
7183
8877
93930
1017185
1173095
12306361
131267266
145198557
1521182343
1685910917
17347187210
181399451545
195629911015
2022616256721
2190754855026
22363890126677
231458172596903
245840531635357
2523385650196090

[0,0,0,1,6,37,183,877,3930,17185,73095,306361,
 1267266,5198557,21182343,85910917,347187210,
 1399451545,5629911015,22616256721,90754855026,
 363890126677,1458172596903,5840531635357,
 23385650196090]