Sequence uniquely defined by: n*a(n) = (n-1)*[x^n] B(x) for n>1 with a(0)=a(1)=1, or, equivalently, x*A'(x) = 1+x - B(x) + x*B'(x), where B(x) = series_reversion(x/A(x))/x.
A120957
Sequence uniquely defined by: n*a(n) = (n-1)*[x^n] B(x) for n>1 with a(0)=a(1)=1, or, equivalently, x*A'(x) = 1+x - B(x) + x*B'(x), where B(x) = series_reversion(x/A(x))/x.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =8a(4) =123a(5) =3024a(6) =106850a(7) =5110440a(8) =317955435a(9) =24986363648
External references
- oeis: A120957