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A243246 as a simple table

na(n)
10
20
30
40
58
668
7709
810540
9258623
1011704072
111006628171
12164059321534
1350335903460830
1429003487412989468

[0,0,0,0,8,68,709,10540,258623,11704072,
 1006628171,164059321534,50335903460830,
 29003487412989468]