Primes of the form 6^x + y^6 with x, y > 0.

Terms

a(0) =7a(1) =37a(2) =1297a(3) =15661a(4) =16921a(5) =304606801a(6) =594823357a(7) =1838266921a(8) =1898731801a(9) =4751783857a(10) =13841287237a(11) =13841567137a(12) =13901753377a(13) =26901981217a(14) =42180533677a(15) =42182213257a(16) =51520374397a(17) =51522053977a(18) =75418891921a(19) =92205451297a(20) =106044804721