Primes p such that p1 = ceiling(p/2) + p is prime and p2 = floor(p1/2) + p is prime.

Terms

a(0) =2a(1) =3a(2) =11a(3) =59a(4) =131a(5) =179a(6) =347a(7) =1259a(8) =1571a(9) =1979a(10) =2027a(11) =2411a(12) =2699a(13) =2819a(14) =3251a(15) =3347a(16) =4211a(17) =5051a(18) =5099a(19) =5171a(20) =5531a(21) =6779a(22) =7187a(23) =8747a(24) =10091a(25) =12227a(26) =13259a(27) =13451a(28) =13499a(29) =13931