Triangle read by rows: the n-th Euclid number followed by the first n primes and 1.

Terms

a(0) =2a(1) =1a(2) =3a(3) =2a(4) =1a(5) =7a(6) =3a(7) =2a(8) =1a(9) =31a(10) =5a(11) =3a(12) =2a(13) =1a(14) =211a(15) =7a(16) =5a(17) =3a(18) =2a(19) =1a(20) =2311a(21) =11a(22) =7a(23) =5a(24) =3a(25) =2a(26) =1a(27) =30031a(28) =13a(29) =11