a(n) is the least number k that A074389(k) = n.

Terms

a(0) =1a(1) =6a(2) =18a(3) =12a(4) =200a(5) =42a(6) =196a(7) =56a(8) =459a(9) =950a(10) =5203a(11) =396a(12) =9243a(13) =980a(14) =1800a(15) =336a(16) =19363a(17) =270a(18) =13357a(19) =600a(20) =1764a(21) =10406a(22) =72473a(23) =168a(24) =18625a(25) =34814a(26) =4293a(27) =812a(28) =145493a(29) =1350