Index of first occurrence of n in A375277, or -1 if n does not appear there.

Terms

a(0) =1a(1) =2a(2) =13a(3) =4a(4) =8a(5) =6a(6) =37a(7) =14a(8) =49a(9) =10a(10) =20a(11) =12a(12) =1553a(13) =26a(14) =85a(15) =16a(16) =97a(17) =18a(18) =47a(19) =32a(20) =15114a(21) =22a(22) =44a(23) =89a(24) =145a(25) =50a(26) =54a(27) =28a(28) =56a(29) =30