a(n) is the smallest prime factor of A342834(n).

Terms

a(0) =7a(1) =797a(2) =3a(3) =7a(4) =37a(5) =3023681a(6) =43a(7) =1249a(8) =7a(9) =3a(10) =23a(11) =11a(12) =3a(13) =19a(14) =3a(16) =193a(17) =2069a(18) =11a(19) =41a(20) =3a(21) =71a(22) =3a(23) =996370591a(24) =3a(25) =101a(26) =1123a(27) =54367a(28) =159469a(29) =151a(30) =29