A177851 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 2 | | 2 |
| | | | | | | | | 3 | | 5 | | 7 |
| | | | | | | | 4 | | 9 | | 16 | | 25 |
| | | | | | | 5 | | 14 | | 30 | | 55 | | 91 |
| | | | | | 6 | | 20 | | 50 | | 105 | | 196 | | 336 |
| | | | | 7 | | 27 | | 77 | | 182 | | 378 | | 714 | | 1254 |
| | | | 8 | | 35 | | 112 | | 294 | | 672 | | 1386 | | 2640 | | 4719 |
| | | 9 | | 44 | | 156 | | 450 | | 1122 | | 2508 | | 5148 | | 9867 | | 17875 |
| | 10 | | 54 | | 210 | | 660 | | 1782 | | 4290 | | 9438 | | 19305 | | 37180 | | 68068 |
|
A177851 as a square array
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| 2 | 5 | 9 | 14 | 20 | 27 | 35 | 44 | 54
| 7 | 16 | 30 | 50 | 77 | 112 | 156 | 210
| 25 | 55 | 105 | 182 | 294 | 450 | 660
| 91 | 196 | 378 | 672 | 1122 | 1782
| 336 | 714 | 1386 | 2508 | 4290
| 1254 | 2640 | 5148 | 9438
| 4719 | 9867 | 19305
| 17875 | 37180
| 68068
|
A177851 as an upper right triangle
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | 2 | 5 | 9 | 14 | 20 | 27 | 35 | 44 | 54
| | | 7 | 16 | 30 | 50 | 77 | 112 | 156 | 210
| | | | 25 | 55 | 105 | 182 | 294 | 450 | 660
| | | | | 91 | 196 | 378 | 672 | 1122 | 1782
| | | | | | 336 | 714 | 1386 | 2508 | 4290
| | | | | | | 1254 | 2640 | 5148 | 9438
| | | | | | | | 4719 | 9867 | 19305
| | | | | | | | | 17875 | 37180
| | | | | | | | | | 68068
|
|