a(n) gives the position of -n in the sequence (or tree) S generated in order by these rules: 0 is in S; if x is in S then x + 1 is in S; if nonzero x is in S then 1/x is in S; if x is in S, then i*x is in S; where duplicates are deleted as they occur.
A233695
a(n) gives the position of -n in the sequence (or tree) S generated in order by these rules: 0 is in S; if x is in S then x + 1 is in S; if nonzero x is in S then 1/x is in S; if x is in S, then i*x is in S; where duplicates are deleted as they occur.
Terms
- a(0) =10a(1) =18a(2) =30a(3) =56a(4) =109a(5) =219a(6) =450a(7) =933a(8) =1946a(9) =4071a(10) =8516a(11) =17823a(12) =37310a(13) =78112a(14) =163551a(15) =342461a(16) =717083a(17) =1501509a(18) =3144031a(19) =6583341a(20) =13784976
External references
- oeis: A233695