Least k such that A(k) = n, where A( ) is sequence A020943.

Terms

a(0) =2a(1) =6a(2) =15a(3) =14a(4) =28a(5) =61a(6) =30a(7) =58a(8) =121a(9) =60a(10) =62a(11) =116a(12) =241a(13) =120a(14) =245a(15) =122a(16) =124a(17) =469a(18) =234a(19) =806a(20) =509a(21) =254a(22) =242a(23) =248a(24) =244a(25) =252a(26) =250a(27) =466a(28) =510a(29) =468