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A070282 as a simple table

na(n)
11
22
32
44
516
62401
7823543
86103515625
9193630125104980427932766033374162714624
10121679161406852748316898260838871037524995421354288562472420444438058627601

[1,2,2,4,16,2401,823543,6103515625,
 193630125104980427932766033374162714624,
 12167916140685274831689826083887103752499542135428\
 8562472420444438058627601]