A000369 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 3 | | 1 |
| | | | | | | | 21 | | 9 | | 1 |
| | | | | | | 231 | | 111 | | 18 | | 1 |
| | | | | | 3465 | | 1785 | | 345 | | 30 | | 1 |
| | | | | 65835 | | 35595 | | 7650 | | 825 | | 45 | | 1 |
| | | | 1514205 | | 848925 | | 196245 | | 24150 | | 1680 | | 63 | | 1 |
| | | 40883535 | | 23586255 | | 5755050 | | 775845 | | 62790 | | 3066 | | 84 | | 1 |
| | 1267389585 | | 748471185 | | 190482705 | | 27478710 |
|
A000369 as a square array
| 1 | 3 | 21 | 231 | 3465 | 65835 | 1514205 | 40883535 | 1267389585
| | 1 | 9 | 111 | 1785 | 35595 | 848925 | 23586255 | 748471185
| | 1 | 18 | 345 | 7650 | 196245 | 5755050 | 190482705
| | 1 | 30 | 825 | 24150 | 775845 | 27478710
| | 1 | 45 | 1680 | 62790
| | 1 | 63 | 3066
| | 1 | 84
| | 1
|
A000369 as an upper right triangle
| 1 | 3 | 21 | 231 | 3465 | 65835 | 1514205 | 40883535 | 1267389585
| | 1 | 9 | 111 | 1785 | 35595 | 848925 | 23586255 | 748471185
| | | 1 | 18 | 345 | 7650 | 196245 | 5755050 | 190482705
| | | | 1 | 30 | 825 | 24150 | 775845 | 27478710
| | | | | 1 | 45 | 1680 | 62790
| | | | | | 1 | 63 | 3066
| | | | | | | 1 | 84
| | | | | | | | 1
| | | | | | | |
|
|
