Numbers k such that the k-th Euclid number A006862(k) = 1 + (Product of first k primes) is prime.

A014545

Numbers k such that the k-th Euclid number A006862(k) = 1 + (Product of first k primes) is prime.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =11a(7) =75a(8) =171a(9) =172a(10) =384a(11) =457a(12) =616a(13) =643a(14) =1391a(15) =1613a(16) =2122a(17) =2647a(18) =2673a(19) =4413a(20) =13494a(21) =31260a(22) =33237a(23) =304723a(24) =365071a(25) =436504a(26) =498865a(27) =637491

External references