Numbers k such that gpf(k^2+1)/k sets a new record of low value, where gpf(k) is the greatest prime dividing k (A006530).
A173561
Numbers k such that gpf(k^2+1)/k sets a new record of low value, where gpf(k) is the greatest prime dividing k (A006530).
Terms
- a(0) =1a(1) =3a(2) =7a(3) =38a(4) =47a(5) =57a(6) =157a(7) =239a(8) =829a(9) =882a(10) =993a(11) =1772a(12) =2673a(13) =2917a(14) =2943a(15) =4747a(16) =4952a(17) =5257a(18) =6118a(19) =9466a(20) =12943a(21) =17557a(22) =18543a(23) =34208a(24) =44179a(25) =72662a(26) =85353a(27) =114669a(28) =219602a(29) =260359
External references
- oeis: A173561