Primes of the form 2^k + 5*k.A299643Primes of the form 2^k + 5*k.Terms a(0) =7a(1) =23a(2) =163a(3) =557a(4) =32843a(5) =2097257a(6) =8589934757a(7) =137438953657External referencesoeis: A299643