Numbers n dividing every cyclic permutation of n^2.

Terms

a(0) =1a(1) =2a(2) =3a(3) =9a(4) =27a(5) =33a(6) =99a(7) =123a(8) =271a(9) =333a(10) =351a(11) =407a(12) =429a(13) =481a(14) =693a(15) =777a(16) =819a(17) =999a(18) =2151a(19) =3333a(20) =4521a(21) =7227a(22) =7373a(23) =9999a(24) =33333a(25) =81819a(26) =99999a(27) =194841a(28) =326733a(29) =333333