Odd numbers n not congruent to 5 mod 6 such that for all k >= 1 the numbers n*4^k + 1 are composite.
A251057
Odd numbers n not congruent to 5 mod 6 such that for all k >= 1 the numbers n*4^k + 1 are composite.
Terms
- a(0) =66741a(1) =271129a(2) =308481a(3) =327739a(4) =436029a(5) =482719a(6) =575041a(7) =636921a(8) =934909a(9) =965431a(10) =1259541a(11) =1259779a(12) =1384059a(13) =1518781a(14) =1639459a(15) =1997589a(16) =2038371a(17) =2131099a(18) =2191531a(19) =2397951a(20) =2473929a(21) =2541601a(22) =2576089a(23) =2931991a(24) =2965569a(25) =3098059a(26) =3608251a(27) =3885579a(28) =3999399a(29) =4095859
External references
- oeis: A251057