A199943 as a triangular array
| | | | | | | | | | 2 |
| | | | | | | | | | 4 | | 2 |
| | | | | | | | | 6 | | 12 | | 2 |
| | | | | | | | 8 | | 30 | | 36 | | 2 |
| | | | | | | 10 | | 56 | | 142 | | 104 | | 2 |
| | | | | | 12 | | 90 | | 376 | | 660 | | 302 | | 2 |
| | | | | 14 | | 132 | | 778 | | 2474 | | 3042 | | 868 | | 2 |
| | | | 16 | | 182 | | 1404 | | 6604 | | 16114 | | 13890 | | 2490 | | 2 |
| | | 18 | | 240 | | 2294 | | 14696 | | 55540 | | 104268 | | 63260 | | 7132 | | 2 |
| | 20 | | 306 | | 3504 | | 28490 | | 152586 | | 464782 | | 672866 | | 287514 |
|
A199943 as a square array
2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20
| 2 | 12 | 30 | 56 | 90 | 132 | 182 | 240 | 306
| 2 | 36 | 142 | 376 | 778 | 1404 | 2294 | 3504
| 2 | 104 | 660 | 2474 | 6604 | 14696 | 28490
| 2 | 302 | 3042 | 16114 | 55540 | 152586
| 2 | 868 | 13890 | 104268 | 464782
| 2 | 2490 | 63260 | 672866
| 2 | 7132 | 287514
| 2
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A199943 as an upper right triangle
2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20
| | 2 | 12 | 30 | 56 | 90 | 132 | 182 | 240 | 306
| | | 2 | 36 | 142 | 376 | 778 | 1404 | 2294 | 3504
| | | | 2 | 104 | 660 | 2474 | 6604 | 14696 | 28490
| | | | | 2 | 302 | 3042 | 16114 | 55540 | 152586
| | | | | | 2 | 868 | 13890 | 104268 | 464782
| | | | | | | 2 | 2490 | 63260 | 672866
| | | | | | | | 2 | 7132 | 287514
| | | | | | | | | 2
| | | | | | | | |
|
|