Numbers k such that phi(k)=p^2, where p is product of digits of k.

Terms

a(0) =1a(1) =12a(2) =125a(3) =451a(4) =4612a(5) =5412a(6) =8313a(7) =22165a(8) =31815a(9) =34125a(10) =43216a(11) =62232a(12) =111398a(13) =115264a(14) =115625a(15) =126225a(16) =142352a(17) =191425a(18) =194313a(19) =235431a(20) =243135a(21) =261532a(22) =265421a(23) =632613a(24) =726313a(25) =852125a(26) =962312a(27) =1142536a(28) =1148316a(29) =1156324