Numbers k such that (14*10^k + 61)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =12a(4) =15a(5) =21a(6) =30a(7) =78a(8) =93a(9) =160a(10) =244a(11) =490a(12) =574a(13) =1196a(14) =1275a(15) =1875a(16) =2590a(17) =5732a(18) =7344a(19) =9728a(20) =11918a(21) =13840a(22) =33945a(23) =100075a(24) =110922a(25) =117991a(26) =142440