Primes p such that x^49 = 2 has no solution mod p, but x^7 = 2 has a solution mod p.

Terms

a(0) =4999a(1) =6959a(2) =7351a(3) =11467a(4) =15583a(5) =16073a(6) =20483a(7) =21169a(8) =21757a(9) =30773a(10) =35771a(11) =37339a(12) =38711a(13) =41161a(14) =45179a(15) =46649a(16) =48119a(17) =51157a(18) =51647a(19) =57527a(20) =58997a(21) =64877a(22) =75167a(23) =75853a(24) =80263a(25) =83791a(26) =84869a(27) =85751a(28) =86927a(29) =93983