A154109 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 2 | | 0 |
| | | | | | | | | 3 | | 0 | | 2 |
| | | | | | | | 4 | | 0 | | 4 | | 7 |
| | | | | | | 5 | | 0 | | 6 | | 14 | | 27 |
| | | | | | 6 | | 0 | | 8 | | 21 | | 54 | | 114 |
| | | | | 7 | | 0 | | 10 | | 28 | | 81 | | 228 | | 523 |
| | | | 8 | | 0 | | 12 | | 35 | | 108 | | 342 | | 1046 | | 2589 |
| | | 9 | | 0 | | 14 | | 42 | | 135 | | 456 | | 1569 | | 5178 | | 13744 |
| | 10 | | 0 | | 16 | | 49 | | 162 | | 570 | | 2092 | | 7767 | | 27488 | | 77821 |
|
A154109 as a square array
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16
| 7 | 14 | 21 | 28 | 35 | 42 | 49
| 27 | 54 | 81 | 108 | 135 | 162
| 114 | 228 | 342 | 456 | 570
| 523 | 1046 | 1569 | 2092
| 2589 | 5178 | 7767
| 13744 | 27488
| 77821
|
A154109 as an upper right triangle
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16
| | | | 7 | 14 | 21 | 28 | 35 | 42 | 49
| | | | | 27 | 54 | 81 | 108 | 135 | 162
| | | | | | 114 | 228 | 342 | 456 | 570
| | | | | | | 523 | 1046 | 1569 | 2092
| | | | | | | | 2589 | 5178 | 7767
| | | | | | | | | 13744 | 27488
| | | | | | | | | | 77821
|
|