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A372238 as a simple table

na(n)
12
22
34
4170
59860
623450
756980
856980
96723767050
1048276858630
1177460393371130
1297581361797920
1397581361797920
141269928100726715430

[2,2,4,170,9860,23450,56980,56980,6723767050,
 48276858630,77460393371130,97581361797920,
 97581361797920,1269928100726715430]