a(n) = smallest k >= 1 such that n divides k^n + k.

Terms

a(0) =1a(1) =1a(2) =3a(3) =3a(4) =5a(5) =2a(6) =7a(7) =7a(8) =9a(9) =4a(10) =11a(11) =3a(12) =13a(13) =6a(14) =3a(15) =15a(16) =17a(17) =8a(18) =19a(19) =4a(20) =21a(21) =10a(22) =23a(23) =8a(24) =25a(25) =12a(26) =27a(27) =3a(28) =29a(29) =5