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A276258 as a simple table

na(n)
11
21
31
43
511
6131
75761
83018753
969564144001
10839987873581797251
11233732149587751710483796746251
12785328685279672432967483833110876164468741280003
13734226246973363127354668827312570246092792043625372932024478449584047744277761

[1,1,1,3,11,131,5761,3018753,69564144001,
 839987873581797251,233732149587751710483796746251,
 785328685279672432967483833110876164468741280003,
 73422624697336312735466882731257024609279204362537\
 2932024478449584047744277761]