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

Terms

a(0) =4a(1) =9a(2) =11a(3) =16a(4) =55a(5) =60a(6) =71a(7) =189a(8) =361a(9) =450a(10) =469a(11) =669a(12) =1261a(13) =1351a(14) =1490a(15) =1591a(16) =2101a(17) =2254a(18) =2396a(19) =2594a(20) =3774a(21) =3866a(22) =4011a(23) =5375a(24) =5551a(25) =5840a(26) =6070a(27) =7336a(28) =7545a(29) =7666