Numbers k such that k^2 + k + 1, k^3 + k + 1 and k^4 + k + 1 are all prime.

Terms

a(0) =1a(1) =2a(2) =5a(3) =6a(4) =12a(5) =69a(6) =77a(7) =131a(8) =162a(9) =426a(10) =701a(11) =792a(12) =1221a(13) =1494a(14) =1644a(15) =1665a(16) =2129a(17) =2429a(18) =2696a(19) =3459a(20) =3557a(21) =3771a(22) =4350a(23) =4367a(24) =5250a(25) =5670a(26) =6627a(27) =7059a(28) =7514a(29) =7929