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A269491 as a simple table

na(n)
16
236
3216
41286
57616
644904
7263794
81545030
99026500
1052624694
11306261764
121779708548
1310328981458
1459882754332
15346857774682
162007544602552
1711611615811212
1867123684593712
19387837889353322
202239991195959860

[6,36,216,1286,7616,44904,263794,1545030,9026500,
 52624694,306261764,1779708548,10328981458,
 59882754332,346857774682,2007544602552,
 11611615811212,67123684593712,387837889353322,
 2239991195959860]