171068

Appears in sequences

• Number of nX3 0..2 arrays with row sums equal and column sums unequal to adjacent columns.at n=5A203486
• T(n,k)=Number of nXk 0..2 arrays with row sums equal and column sums unequal to adjacent columns.at n=33A203491
• Number of 6Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns.at n=2A203496
• G.f.: A(x) = Sum_{n>=0} x^n*((1+x)^n + sqrt(A(x)))^n / (1 + x*sqrt(A(x))*(1+x)^n)^(n+1).at n=11A324963