Primes followed by a gap of 170 = nextprime(p)-p.

Terms

a(0) =27915737a(1) =65069327a(2) =80935103a(3) =84549821a(4) =98253527a(5) =99099773a(6) =105886883a(7) =110597483a(8) =117317297a(9) =124956059a(10) =130389293a(11) =134944361a(12) =139040903a(13) =140217647a(14) =140566253a(15) =153207191a(16) =156479129a(17) =162973457a(18) =182754569a(19) =189599393a(20) =190864901