543950domain: NAppears in sequencesa(n) = binomial(n+4,4)*(2*n+1).at n=21A051880Number of nX5 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 nX5 array.at n=10A219516