Numbers k such that binomial(3k, k) - 1 is prime.

Terms

a(0) =1a(1) =3a(2) =7a(3) =11a(4) =49a(5) =88a(6) =93a(7) =196a(8) =216a(9) =519a(10) =655a(11) =722a(12) =858a(13) =905a(14) =991a(15) =1654a(16) =2277a(17) =3275a(18) =4214a(19) =5047a(20) =5924a(21) =7359a(22) =7953a(23) =11188a(24) =13286a(25) =14626a(26) =14687a(27) =34365a(28) =36014a(29) =65613