Numbers k for which 8*k+1, 8*k+3 and 8*k+7 are primes.

Terms

a(0) =2a(1) =5a(2) =80a(3) =107a(4) =110a(5) =185a(6) =260a(7) =332a(8) =500a(9) =1067a(10) =1307a(11) =1472a(12) =1625a(13) =1760a(14) =1790a(15) =1955a(16) =2255a(17) =2612a(18) =2627a(19) =2672a(20) =2882a(21) =2945a(22) =3197a(23) =3335a(24) =3467a(25) =3965a(26) =4007a(27) =4037a(28) =4040a(29) =4202