Numbers k such that k^3 divides 8^(k^2) + 1.

Terms

a(0) =1a(1) =3a(2) =9a(3) =57a(4) =171a(5) =1467a(6) =13131a(7) =27873a(8) =32547a(9) =97641a(10) =249489a(11) =261633a(12) =784899a(13) =1218897a(14) =1255347a(15) =2140353a(16) =4971027a(17) =8246019a(18) =9961491a(19) =12914001a(20) =14913081a(21) =15915483a(22) =23159043a(23) =23851593a(24) =24738057a(25) =29884473a(26) =40666707a(27) =83512353a(28) =127938537