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A199565 as a simple table

na(n)
02
116
2142
31276
411482
5103336
6930022
78370196
875331762
9677985856
106101872702
1154916854316
12494251688842
134448265199576
1440034386796182
15360309481165636
163242785330490722
1729185067974416496
18262665611769748462

[2,16,142,1276,11482,103336,930022,8370196,
 75331762,677985856,6101872702,54916854316,
 494251688842,4448265199576,40034386796182,
 360309481165636,3242785330490722,
 29185067974416496,262665611769748462]