88518

Appears in sequences

• Number of (1+1) X (n+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=18A250878
• Expansion of Product_{k>=1} (1 + x^(3*k)) / (1 - x^k).at n=39A266648