369730963602domain: NAppears in sequencesExpansion of 1/((1-9*x)*(1-10*x)*(1-11*x)*(1-12*x)).at n=9A016094a(n) = (n^n - 3*(n-1)^n + 3*(n-2)^n - (n-3)^n)/6.at n=12A281595