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

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =20a(5) =68a(6) =110a(7) =164a(8) =220a(9) =340a(10) =610a(11) =772a(12) =820a(13) =1010a(14) =1210a(15) =1220a(16) =1510a(17) =2020a(18) =2420a(19) =2530a(20) =2788a(21) =3020a(22) =3740a(23) =3860a(24) =5060a(25) =6710a(26) =7004a(27) =7370a(28) =8020a(29) =9020