Index of first occurrence of n in A307730.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =47a(5) =7a(6) =52a(7) =27a(8) =17a(9) =60a(10) =1374a(11) =26a(12) =1385a(13) =59a(14) =46a(15) =137a(16) =3738a(17) =98a(18) =3755a(19) =204a(20) =83a(21) =1399a(22) =6680a(23) =136a(24) =320a(25) =1398a(26) =176a(27) =224a(28) =6703a(29) =345