Number of 8k+-1 primes (A001132) in range [2^n,2^(n+1)].

Terms

a(0) =0a(1) =1a(2) =0a(3) =3a(4) =2a(5) =8a(6) =10a(7) =22a(8) =35a(9) =67a(10) =126a(11) =233a(12) =438a(13) =793a(14) =1525a(15) =2825a(16) =5391a(17) =10192a(18) =19332a(19) =36739a(20) =70163a(21) =133983a(22) =256877a(23) =492962a(24) =946938a(25) =1822776a(26) =3513544a(27) =6780795a(28) =13102754a(29) =25349101