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A374567 as a simple table

na(n)
11
22
39
451
5325
62222
715926
8118085
9898217
106970053
1154960439
12439112322
133547096393
1428921270773
15237704587991
161967321998468
1716381661824340
18137144132047520
191153655788549216
209746264972136632
2182656795697147384
22703459159019830315
236005956718852682504
2451426768620398474939

[1,2,9,51,325,2222,15926,118085,898217,6970053,
 54960439,439112322,3547096393,28921270773,
 237704587991,1967321998468,16381661824340,
 137144132047520,1153655788549216,9746264972136632,
 82656795697147384,703459159019830315,
 6005956718852682504,51426768620398474939]