223256

Appears in sequences

• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, 0), (-1, 1), (0, -1), (0, 1), (1, -1)}.at n=12A151446
• Number of intermediate configurations needed to be stored to calculate the number of ways in which a 9 X n grid can be tiled with triominoes.at n=11A215827