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A093978 as a simple table

na(n)
10
20
30
40
53
6196
73784
849824
9577247
106250795
1164725830
12651790197
136443528078
1462906425823
15608875308314
165858471079330
1756139508762734
18536478118777779

[0,0,0,0,3,196,3784,49824,577247,6250795,64725830,
 651790197,6443528078,62906425823,608875308314,
 5858471079330,56139508762734,536478118777779]