411825

Appears in sequences

• 1/4 the number of (n+1) X 4 binary arrays with equal numbers of 2 X 2 subblocks with sums 1 and 3.at n=4A184598
• 1/4 the number of (n+1) X 6 binary arrays with equal numbers of 2 X 2 subblocks with sums 1 and 3.at n=2A184600
• T(n,k) = 1/4 the number of (n+1) X (k+1) binary arrays with equal numbers of 2 X 2 subblocks with sums 1 and 3.at n=23A184604
• T(n,k) = 1/4 the number of (n+1) X (k+1) binary arrays with equal numbers of 2 X 2 subblocks with sums 1 and 3.at n=25A184604
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = Sum_{j=0..n} k^j * binomial(j+k-1,j).at n=61A368487