510664

Appears in sequences

• Number of n X 5 0..1 arrays with rows unimodal and columns nondecreasing.at n=19A225007
• Number A(n,k) of unimodal functions f:[n]->[k*n]; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=50A226031
• a(n) = n*(n + 1)*(11*n^2 + 11*n - 10)/24.at n=32A264854