L.g.f.: exp(Sum_{n>=1} a(n)*x^n/n) = 1 + x*exp(Sum_{n>=1} C(2n-1,n)*a(n)*x^n/n) where C(2n-1,n) = A001700(n-1).
A158259
L.g.f.: exp(Sum_{n>=1} a(n)*x^n/n) = 1 + x*exp(Sum_{n>=1} C(2n-1,n)*a(n)*x^n/n) where C(2n-1,n) = A001700(n-1).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =53a(4) =2321a(5) =351010a(6) =189198136a(7) =371045084781
External references
- oeis: A158259