828707925domain: NAppears in sequencesa(n) = sum of the sums of the k first n-th powers.at n=9A215084Second partial sums of ninth powers (A001017).at n=8A253637a(n) = 1*9^n + 2*8^n + 3*7^n + 4*6^n + 5*5^n + 6*4^n + 7*3^n + 8*2^n + 9*1^n.at n=9A254147