205792

Appears in sequences

• Number of n X n (0,1) matrices such that each row and each column is nondecreasing or nonincreasing.at n=7A032260
• Number of ways of getting a royal flush, other straight flush, four of a kind, full house, other flush, other straight, three of a kind, two pair, a pair, no pair in 6-card poker.at n=4A185241
• Number of (n+2) X 8 binary arrays avoiding patterns 001 and 110 in rows and columns.at n=5A202050
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 177", based on the 5-celled von Neumann neighborhood.at n=8A270619
• Triangle T(n,k), n >= 2, 0 <= k <= floor(n^2/2)-2*n+2, read by rows, where T(n,k) is the number of 2*(k+2*n-2)-cycles in the n X n grid graph which pass through four corners ((0,0), (0,n-1), (n-1,n-1), (n-1,0)).at n=31A333668