A011117 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 2 | | 3 |
| | | | | | | | | 1 | | 3 | | 7 | | 11 |
| | | | | | | | 1 | | 4 | | 12 | | 28 | | 45 |
| | | | | | | 1 | | 5 | | 18 | | 52 | | 121 | | 197 |
| | | | | | 1 | | 6 | | 25 | | 84 | | 237 | | 550 | | 903 |
| | | | | 1 | | 7 | | 33 | | 125 | | 403 | | 1119 | | 2591 | | 4279 |
| | | | 1 | | 8 | | 42 | | 176 | | 630 | | 1976 | | 5424 | | 12536 | | 20793 |
| | | 1 | | 9 | | 52 | | 238 | | 930 | | 3206 | | 9860 | | 26832 | | 61921 | | 103049 |
| | 1 | | 10 | | 63 |
|
A011117 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | 3 | 7 | 12 | 18 | 25 | 33 | 42 | 52 | 63
| | 11 | 28 | 52 | 84 | 125 | 176 | 238
| | 45 | 121 | 237 | 403 | 630 | 930
| | 197 | 550 | 1119 | 1976 | 3206
| | 903 | 2591 | 5424 | 9860
| | 4279 | 12536 | 26832
| | 20793 | 61921
| | 103049
|
A011117 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | | 3 | 7 | 12 | 18 | 25 | 33 | 42 | 52 | 63
| | | | 11 | 28 | 52 | 84 | 125 | 176 | 238
| | | | | 45 | 121 | 237 | 403 | 630 | 930
| | | | | | 197 | 550 | 1119 | 1976 | 3206
| | | | | | | 903 | 2591 | 5424 | 9860
| | | | | | | | 4279 | 12536 | 26832
| | | | | | | | | 20793 | 61921
| | | | | | | | | | 103049
| | | | | | | | | |
|
|
