190155

Appears in sequences

• Number of nX1 0..n+1-2 arrays with upper left zero and lower right n+1-2 and each element differing from its horizontal and vertical neighbors by one or two.at n=13A265440
• Expansion of Product_{k>=1} (1 + x^(2*k-1))^(k*(k-1)/2).at n=40A294777