73219

Appears in sequences

• n * (11*n^2 + 6*n + 1) / 6.at n=34A215646
• Number of edge covers in the ladder graph P_2 x P_n.at n=6A286911
• Array read by antidiagonals: T(m,n) = number of edge covers in the grid graph P_m X P_n.at n=29A286912
• Array read by antidiagonals: T(m,n) = number of edge covers in the grid graph P_m X P_n.at n=34A286912