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A019021 as a simple table

na(n)
23
37
430
5140
6908
75586
835137
9226799
101489781
119920319
1267048694
13458884910
143172523046
1522127603235
16155529572271

[3,7,30,140,908,5586,35137,226799,1489781,9920319,
 67048694,458884910,3172523046,22127603235,
 155529572271]