Primes of the form 7^x + y^7 with x, y > 0.

Terms

a(0) =16433a(1) =33191a(2) =134033a(3) =6044737a(4) =40633543a(5) =50353607a(6) =268435463a(7) =268437857a(8) =268452263a(9) =274200257a(10) =1977343127a(11) =2245762199a(12) =2494358231a(13) =4471684631a(14) =4586471767a(15) =13841567137a(16) =21870016807a(17) =21870117649a(18) =52523350487a(19) =54500676887a(20) =78364166497a(21) =92205451297a(22) =97157445863