177342

Appears in sequences

• Number of length 1+3 0..n arrays with no pair in any consecutive four terms totalling exactly n.at n=20A246480
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k torus up to horizontal and vertical reflections by a tile that is fixed under 180-degree rotations but not horizontal or vertical reflections.at n=39A368303
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k torus up to horizontal and vertical reflections by a tile that is fixed under 180-degree rotations but not horizontal or vertical reflections.at n=41A368303