440405

Appears in sequences

• Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having a sum of two, with rows and columns of the latter in lexicographically nondecreasing order.at n=18A227099
• Number of n X 3 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.at n=5A266028
• T(n,k)=Number of nXk integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.at n=33A266033
• Number of 6Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors less than itself.at n=2A266038