a(1) = 1 and then the smallest primes such that all a(k)-a(j) are distinct composite numbers.

Terms

a(0) =1a(1) =5a(2) =11a(3) =19a(4) =31a(5) =47a(6) =71a(7) =103a(8) =151a(9) =227a(10) =277a(11) =389a(12) =463a(13) =541a(14) =599a(15) =733a(16) =797a(17) =887a(18) =1087a(19) =1217a(20) =1361a(21) =1579a(22) =1693a(23) =1861a(24) =2129a(25) =2267a(26) =2887a(27) =3137a(28) =3301a(29) =3389