Primes that are of the form p^k-2 for some k > 3 and prime p.

Terms

a(0) =79a(1) =241a(2) =727a(3) =2399a(4) =14639a(5) =19681a(6) =28559a(7) =371291a(8) =707279a(9) =823541a(10) =1771559a(11) =2825759a(12) =3418799a(13) =5764799a(14) =7890479a(15) =12117359a(16) =24137567a(17) =28398239a(18) =28629149a(19) =47458319a(20) =104060399a(21) =1073283119a(22) =2565726407a(23) =3262808639a(24) =3373402559a(25) =5887339439a(26) =6103515623a(27) =7370050799a(28) =9354951839a(29) =10779215327