a(n) = [(x*y*z*u)^n] 1/((1-(x+y+z+u))*(1-x*y-z*u)).
A381184
a(n) = [(x*y*z*u)^n] 1/((1-(x+y+z+u))*(1-x*y-z*u)).
Terms
- a(0) =1a(1) =30a(2) =2958a(3) =428652a(4) =72819090a(5) =13516242348
External references
- oeis: A381184
A381184
a(n) = [(x*y*z*u)^n] 1/((1-(x+y+z+u))*(1-x*y-z*u)).