a(n) = prime(n)^2 - 2.

Terms

a(0) =2a(1) =7a(2) =23a(3) =47a(4) =119a(5) =167a(6) =287a(7) =359a(8) =527a(9) =839a(10) =959a(11) =1367a(12) =1679a(13) =1847a(14) =2207a(15) =2807a(16) =3479a(17) =3719a(18) =4487a(19) =5039a(20) =5327a(21) =6239a(22) =6887a(23) =7919a(24) =9407a(25) =10199a(26) =10607a(27) =11447a(28) =11879a(29) =12767