a(n) is the least number k such that A066323(k) = n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =23a(9) =39a(10) =55a(11) =71a(12) =87a(13) =103a(14) =359a(15) =615a(16) =871a(17) =1127a(18) =1383a(19) =1639a(20) =5735a(21) =9831a(22) =13927a(23) =18023a(24) =22119a(25) =26215a(26) =91751a(27) =157287a(28) =222823a(29) =288359