Numbers k such that k^3 divides 6^(k^2) + 1.

Terms

a(0) =1a(1) =7a(2) =203a(3) =1379a(4) =11977a(5) =39991a(6) =577129a(7) =2359469a(8) =4780447a(9) =6521291a(10) =6640739a(11) =9904979a(12) =21511301a(13) =28434413a(14) =34050611a(15) =113694413a(16) =189117439a(17) =222281549a(18) =250163599a(19) =282046373a(20) =391803601a(21) =941748059a(22) =1269166759a(23) =1308225583