Numbers n such that n*6^n - 1 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =19a(4) =20a(5) =24a(6) =34a(7) =77a(8) =107a(9) =114a(10) =122a(11) =165a(12) =530a(13) =1999a(14) =4359a(15) =11842a(16) =12059a(17) =13802a(18) =22855a(19) =41679a(20) =58185a(21) =145359a(22) =249987