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A171116 as a simple table

na(n)
10
20
30
4105
5109781
612597900
7302280963
83356773532
923599355991
10122416062018
11510681301550
121807308075111
135622246678741
1415761274284852
1540547443860105
1697044388890450
17218379097055159
18465931135430250
19948922558475388
201854955331788517
213496355565562725

[0,0,0,105,109781,12597900,302280963,3356773532,
 23599355991,122416062018,510681301550,
 1807308075111,5622246678741,15761274284852,
 40547443860105,97044388890450,218379097055159,
 465931135430250,948922558475388,1854955331788517,
 3496355565562725]