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A375538 as a simple table

na(n)
11
213
351227
4926908275845
5548123689541583443758024333411
6629375533747930240763697631488051776709110194920714685268467462860005271344878614119

[1,13,51227,926908275845,
 548123689541583443758024333411,
 62937553374793024076369763148805177670911019492071\
 4685268467462860005271344878614119]