Inverse of A302853: if A302853(k) = n, a(n) = k, or -1 if n does not occur in A302853.

Terms

a(0) =0a(1) =1a(2) =3a(3) =2a(4) =5a(5) =25a(6) =4a(7) =26a(8) =7a(9) =8a(10) =10a(11) =9a(12) =6a(13) =28a(14) =11a(15) =27a(16) =13a(17) =14a(18) =16a(19) =15a(20) =18a(21) =30a(22) =17a(23) =31a(24) =20a(25) =21a(26) =23a(27) =22a(28) =19a(29) =29