Numbers k such that (28*10^k + 131)/3 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =8a(6) =19a(7) =100a(8) =162a(9) =228a(10) =405a(11) =535a(12) =548a(13) =1616a(14) =1982a(15) =2139a(16) =2832a(17) =3115a(18) =3750a(19) =4767a(20) =5051a(21) =9970a(22) =15708a(23) =20909a(24) =33755a(25) =41669a(26) =44822a(27) =45638a(28) =75078