Least k such that A(k) = n, where A( ) is sequence A020945.

Terms

a(0) =1a(1) =4a(2) =11a(3) =10a(4) =20a(5) =24a(6) =22a(7) =42a(8) =89a(9) =44a(10) =46a(11) =84a(12) =100a(13) =88a(14) =96a(15) =90a(16) =92a(17) =204a(18) =170a(19) =202a(20) =192a(21) =190a(22) =178a(23) =184a(24) =180a(25) =188a(26) =186a(27) =338a(28) =382a(29) =340