841984

Appears in sequences

• Expansion of o.g.f. 2*(1+x)^2/(1-2*x+sqrt(1-8*x)).at n=8A182959
• Number of nX4 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X5 binary array having nonzero determinant.at n=4A227592
• Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having nonzero determinant.at n=3A227593
• T(n,k)=Number of nXk 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X(k+1) binary array having nonzero determinant.at n=31A227594
• T(n,k)=Number of nXk 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X(k+1) binary array having nonzero determinant.at n=32A227594