215308domain: NAppears in sequencesa(n) = Sum_{k=0..n} p(k) where p(k) = number of partitions of k (A000041).at n=40A000070Sum of first n terms of A_n (using absolute values of terms).at n=40A039928Sum of first n terms of A_n (signed values).at n=40A100543Permanent of the n-th principal submatrix of A204255.at n=6A204256