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A067352 as a simple table

na(n)
12
22
37
430
5158
6985
77089
857890
9529276
105358915
1159543495
12720476284
139431689530
14132829627541
152002662076765
1632185640519430
17549301598198264
189921760117456135
19189097075179752211
203792446896660586000
2179840987298117599990
221760493769923493079769
2340575189744903364314665

[2,2,7,30,158,985,7089,57890,529276,5358915,
 59543495,720476284,9431689530,132829627541,
 2002662076765,32185640519430,549301598198264,
 9921760117456135,189097075179752211,
 3792446896660586000,79840987298117599990,
 1760493769923493079769,40575189744903364314665]