396804

Appears in sequences

• G.f. A(x) satisfies: A(A(x)) = x*(1+2*x)^2.at n=10A097090
• Number of nX4 binary arrays whose sum with another nX4 binary array containing no more than a single 1 has rows and columns in lexicographically nondecreasing order.at n=6A225896
• Number of nX7 binary arrays whose sum with another nX7 binary array containing no more than a single 1 has rows and columns in lexicographically nondecreasing order.at n=3A225899
• T(n,k)=Number of nXk binary arrays whose sum with another nXk binary array containing no more than a single 1 has rows and columns in lexicographically nondecreasing order.at n=48A225900