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A304286 as a simple table

na(n)
14
25
3316
4617610
5803725588973
6456253083482572713037551
79436780443304881627624731251391047815103579902912

[4,5,316,617610,803725588973,
 456253083482572713037551,
 9436780443304881627624731251391047815103579902912]