A258306 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 1 | | 2 |
| | | | | | | | | 1 | | 1 | | 3 | | 5 |
| | | | | | | | 1 | | 1 | | 4 | | 7 | | 14 |
| | | | | | | 1 | | 1 | | 5 | | 9 | | 23 | | 43 |
| | | | | | 1 | | 1 | | 6 | | 11 | | 34 | | 71 | | 141 |
| | | | | 1 | | 1 | | 7 | | 13 | | 47 | | 105 | | 255 | | 490 |
| | | | 1 | | 1 | | 8 | | 15 | | 62 | | 145 | | 411 | | 911 | | 1785 |
| | | 1 | | 1 | | 9 | | 17 | | 79 | | 191 | | 615 | | 1496 | | 3535 | | 6789 |
| | 1 | | 1 | | 10 | | 19 | | 98 | | 243 | | 873 | | 2269 | | 6169 | | 13903 | | 26809 |
|
A258306 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19
| 14 | 23 | 34 | 47 | 62 | 79 | 98
| 43 | 71 | 105 | 145 | 191 | 243
| 141 | 255 | 411 | 615 | 873
| 490 | 911 | 1496 | 2269
| 1785 | 3535 | 6169
| 6789 | 13903
| 26809
|
A258306 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | | | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19
| | | | | 14 | 23 | 34 | 47 | 62 | 79 | 98
| | | | | | 43 | 71 | 105 | 145 | 191 | 243
| | | | | | | 141 | 255 | 411 | 615 | 873
| | | | | | | | 490 | 911 | 1496 | 2269
| | | | | | | | | 1785 | 3535 | 6169
| | | | | | | | | | 6789 | 13903
| | | | | | | | | | | 26809
|
|