a(n) is the smallest positive integer k such that A002325(k) = n.

Terms

a(0) =1a(1) =3a(2) =9a(3) =27a(4) =81a(5) =99a(6) =729a(7) =297a(8) =1089a(9) =891a(10) =59049a(11) =1683a(12) =531441a(13) =8019a(14) =9801a(15) =5049a(16) =43046721a(17) =18513a(18) =387420489a(19) =15147a(20) =88209a(21) =649539a(22) =31381059609a(23) =31977a(24) =1185921a(25) =5845851a(26) =314721a(27) =136323a(29) =166617a(31) =95931