Smallest number a(n) == 1 (mod n) such that the prime signature of n and a(n) is the same.

Terms

a(0) =3a(1) =7a(2) =9a(3) =11a(4) =55a(5) =29a(6) =4913a(7) =289a(8) =21a(9) =23a(10) =325a(11) =53a(12) =15a(13) =46a(14) =81a(15) =103a(16) =325a(17) =191a(18) =261a(19) =22a(20) =111a(21) =47a(22) =3625a(23) =10201a(24) =183a(25) =6859a(26) =477a(27) =59a(28) =1771a(29) =311