Primes followed by a gap of 256 = nextprime(p)-p.

Terms

a(0) =1872851947a(1) =2362150363a(2) =2394261637a(3) =2880755131a(4) =2891509333a(5) =3353981623a(6) =3512569873a(7) =3727051753a(8) =3847458487a(9) =4008610423a(10) =4486630573a(11) =4541745583a(12) =4755895531a(13) =4837532347a(14) =5227869607a(15) =5389475977a(16) =6201260587a(17) =6229685347a(18) =6952228483a(19) =7325665111a(20) =7414468513