133343

Appears in sequences

• Half the number of n X n symmetric binary matrices with adjacent rows differing in at most two positions.at n=7A140177
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 0), (-1, 0, 1), (0, 1, 0), (1, 0, 0)}.at n=10A150041
• Number of compositions (ordered partitions) of n into Pell numbers (A000129).at n=23A355805