152225

Appears in sequences

• Number of self-avoiding planar walks of length 2n starting at (0,0), ending at (n,0), remaining in the first quadrant and using steps (0,1), (1,0), (1,1), (-1,1), and (1,-1) with the restriction that (0,1) is never used below the diagonal and (1,0) is never used above the diagonal.at n=9A284416
• Expansion of (-1 + Product_{k>=1} 1 / (1 + (-x)^k))^5.at n=29A341244