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A270550 as a simple table

na(n)
12
23
329
45427
544351523
62425185575687123
728554057480843193512603851183810
8867562462760057302403082510579589337681874970064132683984477238

[2,3,29,5427,44351523,2425185575687123,
 28554057480843193512603851183810,
 86756246276005730240308251057958933768187497006413\
 2683984477238]