a(n) is the index of the first occurrence of n in A080071, or 0 for those n>0 which never occur in A080071.
A080090
a(n) is the index of the first occurrence of n in A080071, or 0 for those n>0 which never occur in A080071.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =4a(4) =10a(5) =58a(6) =43a(7) =191a(8) =246a(9) =320a(10) =2000a(11) =1602a(12) =4172a(13) =7598a(14) =21843a(15) =36520a(16) =27737
External references
- oeis: A080090