Triangle of primes derived in A083776.

Terms

a(0) =3a(1) =7a(2) =5a(3) =37a(4) =23a(5) =17a(6) =1087a(7) =653a(8) =467a(9) =107a(10) =57787a(11) =34673a(12) =24767a(13) =13337a(14) =1367a(15) =745747a(16) =447449a(17) =319607a(18) =203387a(19) =172097a(20) =15017a(21) =1203237037a(22) =721942223a(23) =515673017a(24) =328155557a(25) =277670087a(26) =189984797a(27) =285287a(28) =243894195547a(29) =146336517329