Prime numbers p such that p +- ((p-1)/4) are primes.

Terms

a(0) =1489a(1) =2377a(2) =2689a(3) =2857a(4) =3361a(5) =3889a(6) =4969a(7) =5569a(8) =6481a(9) =6577a(10) =7537a(11) =8089a(12) =10009a(13) =11257a(14) =14281a(15) =14449a(16) =14929a(17) =15601a(18) =16057a(19) =17569a(20) =18121a(21) =19249a(22) =21817a(23) =22441a(24) =24169a(25) =24697a(26) =25057a(27) =26881a(28) =27481a(29) =30937