GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
(x[1]+1)*(x[2]+1)*(x[3]+1)*(x[8]+1)*(x[11]+1)*(x[12]+1)* (x[13]+1)*(x[13]+2)*(x[13]+3)*(x[13]+4)*(x[13]+5)*1/120
