9484003domain: NPropertiesPrimalityPrimeyesAppears in sequencesTriangle read by rows: T(n,k) is the number of sensed combinatorial maps with n edges and k vertices, 1 <= k <= n + 1.at n=47A380615Number of sensed combinatorial maps with n edges and 3 vertices.at n=7A380619Prime numbersat n=632581