59695

Appears in sequences

• G.f. satisfies: A(x) = exp( Sum_{n>=1} [Sum_{k=0..3*n} T(n,k)^2 * x^k] / A(x)^n * x^n/n ) where T(n,k) equals the coefficient of x^k in (1+x+x^2+x^3)^n.at n=19A248876
• Number of nX5 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.at n=8A303687