234300domain: NAppears in sequencesa(n) = 484*n^2 + 2*n.at n=21A158325a(n) = n*(n^3 + 2).at n=22A185065Permanent of the n-th principal submatrix of A002024.at n=5A204248Numbers k such that sigma(k) = 3*sigma(k+1).at n=7A217791Number of minimal total dominating sets in the n-double cone graph.at n=19A362812