374517

Appears in sequences

• Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,1,1,0 for x=0,1,2,3,4.at n=19A197497
• G.f. satisfies A(x) = 1 + x*A(x) / (1 + x*A(x)^3).at n=14A364736