15967980
domain: N
Appears in sequences
- Fourth convolution of Catalan numbers: a(n) = 4*binomial(2*n+3,n)/(n+4).at n=13A002057
- Expansion of 1/(1-4*x)^(19/2).at n=6A020930
- An inverse Chebyshev transform of x^3.at n=14A099376
- a(n) = (1/n!) * (5*n)!/(5*n/2)! * (3*n/2)!/(3*n)!.at n=6A262732
- a(n) = (3*n)!*(10*n)!/((2*n)!*(5*n)!*(6*n)!).at n=3A364402
- Arises from enumeration of a certain class of partial zig-zag knight's paths on the square grid.at n=28A368378