a(n) is the number of ways to evaluate a polynomial of degree n, say p0 + p1*x + ... + pn*x^n, where each addition or multiplication takes exactly two arguments.
A169608
a(n) is the number of ways to evaluate a polynomial of degree n, say p0 + p1*x + ... + pn*x^n, where each addition or multiplication takes exactly two arguments.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =163a(4) =11602a(5) =2334244a(6) =1304066578
External references
- oeis: A169608