624877domain: NAppears in sequencesExpansion of 1/((1-x)*(1-6*x)*(1-7*x)).at n=6A016241Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2) + 2, where a(0) = 1, a(1) = 2, b(0) = 3.at n=24A294534