A057281 as a triangular array
| | | | | | | | 1 |
| | | | | | | | 5 | | 16 |
| | | | | | | 20 | | 160 | | 300 |
| | | | | | 75 | | 1075 | | 4850 | | 6840 |
| | | | | 275 | | 6100 | | 48175 | | 159650 | | 186120 |
| | | | 1000 | | 31550 | | 379700 | | 2168650 | | 5846700 | | 5916240 |
| | | 3625 | | 153875 | | 2605175 | | 22426825 | | 103057800 | | 238437900 | | 215717040 |
| | 13125 | | 720375 | | 16273875 | | 195469125 |
|
A057281 as a square array
1 | 5 | 20 | 75 | 275 | 1000 | 3625 | 13125
| 16 | 160 | 1075 | 6100 | 31550 | 153875 | 720375
| 300 | 4850 | 48175 | 379700 | 2605175 | 16273875
| 6840 | 159650 | 2168650 | 22426825 | 195469125
| 186120 | 5846700 | 103057800
| 5916240 | 238437900
| 215717040
|
A057281 as an upper right triangle
1 | 5 | 20 | 75 | 275 | 1000 | 3625 | 13125
| | 16 | 160 | 1075 | 6100 | 31550 | 153875 | 720375
| | | 300 | 4850 | 48175 | 379700 | 2605175 | 16273875
| | | | 6840 | 159650 | 2168650 | 22426825 | 195469125
| | | | | 186120 | 5846700 | 103057800
| | | | | | 5916240 | 238437900
| | | | | | | 215717040
| | | | | | |
|
|