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A269023 as a simple table

na(n)
12
24
38
419
551
6141
7392
81079
92957
108072
1121987
1259825
13162695
14442342
151202521
163268920
178885999
1824154826
1965659826
20178482140

[2,4,8,19,51,141,392,1079,2957,8072,21987,59825,
 162695,442342,1202521,3268920,8885999,24154826,
 65659826,178482140]