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A309116 as a simple table

na(n)
21
33
425
51299
61974452
794345468975
8152799292695935115
910526127565809458484649781
1038375912431199015810067477044326371

[1,3,25,1299,1974452,94345468975,
 152799292695935115,10526127565809458484649781,
 38375912431199015810067477044326371]