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A318220 as a simple table

na(n)
10
216
3413
413722
5407121
612458503
7381426500
811669008142
9357007586982
1010922535527287
11334171256230583
1210223857024851046
13312795489864911224
149569873151878592164
15292787060908281364545
168957721988741466827281

[0,16,413,13722,407121,12458503,381426500,
 11669008142,357007586982,10922535527287,
 334171256230583,10223857024851046,
 312795489864911224,9569873151878592164,
 292787060908281364545,8957721988741466827281]