A128899 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 0 | | 1 |
| | | | | | | | | | 0 | | 2 | | 1 |
| | | | | | | | | 0 | | 5 | | 4 | | 1 |
| | | | | | | | 0 | | 14 | | 14 | | 6 | | 1 |
| | | | | | | 0 | | 42 | | 48 | | 27 | | 8 | | 1 |
| | | | | | 0 | | 132 | | 165 | | 110 | | 44 | | 10 | | 1 |
| | | | | 0 | | 429 | | 572 | | 429 | | 208 | | 65 | | 12 | | 1 |
| | | | 0 | | 1430 | | 2002 | | 1638 | | 910 | | 350 | | 90 | | 14 | | 1 |
| | | 0 | | 4862 | | 7072 | | 6188 | | 3808 | | 1700 | | 544 | | 119 | | 16 | | 1 |
| | 0 | | 16796 | | 25194 | | 23256 | | 15504 | | 7752 | | 2907 | | 798 | | 152 | | 18 | | 1 |
|
A128899 as a square array
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 2 | 5 | 14 | 42 | 132 | 429 | 1430 | 4862 | 16796
| 1 | 4 | 14 | 48 | 165 | 572 | 2002 | 7072 | 25194
| 1 | 6 | 27 | 110 | 429 | 1638 | 6188 | 23256
| 1 | 8 | 44 | 208 | 910 | 3808 | 15504
| 1 | 10 | 65 | 350 | 1700 | 7752
| 1 | 12 | 90 | 544 | 2907
| 1 | 14 | 119 | 798
| 1 | 16 | 152
| 1 | 18
| 1
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A128899 as an upper right triangle
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 2 | 5 | 14 | 42 | 132 | 429 | 1430 | 4862 | 16796
| | | 1 | 4 | 14 | 48 | 165 | 572 | 2002 | 7072 | 25194
| | | | 1 | 6 | 27 | 110 | 429 | 1638 | 6188 | 23256
| | | | | 1 | 8 | 44 | 208 | 910 | 3808 | 15504
| | | | | | 1 | 10 | 65 | 350 | 1700 | 7752
| | | | | | | 1 | 12 | 90 | 544 | 2907
| | | | | | | | 1 | 14 | 119 | 798
| | | | | | | | | 1 | 16 | 152
| | | | | | | | | | 1 | 18
| | | | | | | | | | | 1
|
|