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A267023 as a simple table

na(n)
16
28
321
4137
5759
64835
731591
8216460
91516047
1010864196
1179437844
12590119523
134453596825
1434028591249
15263304258843
162058154419091
1716252842542358
18129434331448080
191039407597863960
208405943746368118
2168447035142972923

[6,8,21,137,759,4835,31591,216460,1516047,
 10864196,79437844,590119523,4453596825,
 34028591249,263304258843,2058154419091,
 16252842542358,129434331448080,1039407597863960,
 8405943746368118,68447035142972923]