5692900

Appears in sequences

• Number of n X 5 (-1,0,1) arrays of determinants of 2 X 2 subblocks of some (n+1) X 6 binary array with rows and columns of the latter in lexicographically nondecreasing order.at n=5A226869
• T(n,k)=Number of nXk (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X(k+1) binary array with rows and columns of the latter in lexicographically nondecreasing order.at n=49A226870