Nonprime terms of A115558.

Terms

a(0) =1a(1) =316a(2) =333a(3) =549a(4) =844a(5) =963a(6) =981a(7) =1052a(8) =1233a(9) =1251a(10) =1304a(11) =1341a(12) =1359a(13) =1474a(14) =1629a(15) =1688a(16) =1737a(17) =1738a(18) =1996a(19) =2061a(20) =2144a(21) =2216a(22) =2421a(23) =2528a(24) =2547a(25) =2763a(26) =2979a(27) =3033a(28) =3082a(29) =3123