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A072059 as a simple table

na(n)
12
27
397
4577
57507
6217717
75232727
875172597
91617423307
1059844662377
112750790860317
12109455887488447
134621264673452927
14218071376383127767
1510914293640945722527
16662082573402158125717
1741249727342503299116997

[2,7,97,577,7507,217717,5232727,75172597,
 1617423307,59844662377,2750790860317,
 109455887488447,4621264673452927,
 218071376383127767,10914293640945722527,
 662082573402158125717,41249727342503299116997]