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A027120 as a simple table

na(n)
22
37
420
556
6155
7429
81188
93298
109181
1125634
1271781
13201569
14567538
151601971
164532460
1712851882
1836516613
19103955432
20296471643
21846932919
222423256440
236943726380
2419924638557
2557247669927
26164688166948
27474323305547

[2,7,20,56,155,429,1188,3298,9181,25634,71781,
 201569,567538,1601971,4532460,12851882,36516613,
 103955432,296471643,846932919,2423256440,
 6943726380,19924638557,57247669927,164688166948,
 474323305547]