Numbers k such that binomial(5k, k) - 1 is prime.

Terms

a(0) =5a(1) =71a(2) =111a(3) =187a(4) =239a(5) =247a(6) =473a(7) =628a(8) =847a(9) =1478a(10) =2687a(11) =3530a(12) =5175a(13) =9113a(14) =10968a(15) =15039a(16) =28929a(17) =35649a(18) =43481a(19) =44455a(20) =51269a(21) =63975a(22) =71723