a(n) = least m such that m-th term of A128630 equals n.
A128631
a(n) = least m such that m-th term of A128630 equals n.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =3a(4) =7a(5) =11a(6) =23a(7) =47a(8) =185a(9) =431a(10) =1438a(11) =6063a(12) =31067
External references
- oeis: A128631