413066170domain: NAppears in sequencesExpansion of 1/((1-7*x)*(1-8*x)*(1-9*x)*(1-10*x)).at n=7A016109a(n) = (n^n - 3*(n-1)^n + 3*(n-2)^n - (n-3)^n)/6.at n=10A281595