a(n) = A000787(n) + 1.

Terms

a(0) =1a(1) =2a(2) =9a(3) =12a(4) =70a(5) =89a(6) =97a(7) =102a(8) =112a(9) =182a(10) =610a(11) =620a(12) =690a(13) =809a(14) =819a(15) =889a(16) =907a(17) =917a(18) =987a(19) =1002a(20) =1112a(21) =1692a(22) =1882a(23) =1962a(24) =6010a(25) =6120a(26) =6700a(27) =6890a(28) =6970a(29) =8009