Numbers k such that (85*10^k + 473)/9 is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =8a(5) =9a(6) =32a(7) =56a(8) =63a(9) =80a(10) =117a(11) =185a(12) =590a(13) =777a(14) =1962a(15) =2654a(16) =3341a(17) =5484a(18) =10256a(19) =11051a(20) =11816a(21) =20622a(22) =44750a(23) =94802a(24) =105242a(25) =117719a(26) =140609