149942

Appears in sequences

• Number of plane regions after drawing (in general position) a convex n-gon and all its diagonals.at n=43A027927
• Number of -4..4 arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.at n=6A199700
• T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zero sum and no two neighbors equal.at n=51A199704
• Number of -n..n arrays x(0..6) of 7 elements with zero sum and no two neighbors equal.at n=3A199709
• Number of faces in the n-polygon diagonal intersection graph.at n=41A301748