Number of distinct nonnegative rational numbers that can be obtained in n steps by a straight-line program (SLP) starting at 1 using addition, subtraction, multiplication and division.

A288850

Number of distinct nonnegative rational numbers that can be obtained in n steps by a straight-line program (SLP) starting at 1 using addition, subtraction, multiplication and division.

Terms

    a(0) =1a(1) =3a(2) =6a(3) =16a(4) =58a(5) =321a(6) =2585a(7) =30198

External references