Values of k such that L(k)*L(k+1)-1 is a prime, where L(k) is the k-th Lucas number (A000032).

Terms

a(0) =1a(1) =2a(2) =5a(3) =6a(4) =8a(5) =17a(6) =18a(7) =20a(8) =26a(9) =30a(10) =45a(11) =56a(12) =156a(13) =176a(14) =306a(15) =308a(16) =548a(17) =680a(18) =1197a(19) =2393a(20) =2396a(21) =3870a(22) =4397a(23) =7224a(24) =9734a(25) =17724a(26) =25584a(27) =31793a(28) =44924a(29) =70028