Least number k such that A304036(k) = n.

Terms

a(0) =0a(1) =2a(2) =6a(3) =24a(4) =26a(5) =124a(6) =122a(7) =126a(8) =722a(9) =728a(10) =726a(11) =750a(12) =746a(13) =5046a(14) =5064a(15) =5164a(16) =5070a(17) =5066a(18) =5162a(19) =40370a(20) =5166a(21) =40350a(22) =40346a(23) =40464a(24) =40448a(25) =40442a(26) =40466a(27) =362906a(28) =40446a(29) =41046