Numbers k such that (47*10^k - 119)/9 is prime.

Terms

a(0) =2a(1) =3a(2) =9a(3) =15a(4) =39a(5) =45a(6) =59a(7) =137a(8) =180a(9) =224a(10) =264a(11) =476a(12) =491a(13) =504a(14) =1905a(15) =3144a(16) =4784a(17) =10893a(18) =24483a(19) =28602a(20) =82706a(21) =100283a(22) =129789a(23) =131886a(24) =132125