Numbers n such that n-th Lucas number is prime, but cannot be written in the form a^2 + 10*b^2.

Terms

a(0) =0a(1) =2a(2) =4a(3) =7a(4) =8a(5) =11a(6) =16a(7) =19a(8) =31a(9) =47a(10) =71a(11) =79a(12) =503a(13) =863a(14) =4787a(15) =5851a(16) =8467a(17) =10691a(18) =12251a(19) =13963a(20) =36779a(21) =44507a(22) =56003a(23) =81671a(24) =94823a(25) =148091a(26) =202667a(27) =574219a(28) =616787a(29) =637751