A064645 as a triangular array
| | | | | | | | | | | | | | 1 |
| | | | | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | | | | 2 | | 1 | | 1 |
| | | | | | | | | | | | 4 | | 1 | | 1 | | 1 |
| | | | | | | | | | | 9 | | 2 | | 1 | | 1 | | 1 |
| | | | | | | | | | 21 | | 4 | | 1 | | 1 | | 1 | | 1 |
| | | | | | | | | 51 | | 8 | | 2 | | 1 | | 1 | | 1 | | 1 |
| | | | | | | | 127 | | 17 | | 4 | | 1 | | 1 | | 1 | | 1 | | 1 |
| | | | | | | 323 | | 37 | | 8 | | 2 | | 1 | | 1 | | 1 | | 1 | | 1 |
| | | | | | 835 | | 82 | | 16 | | 4 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 |
| | | | | 2188 | | 185 | | 33 | | 8 | | 2 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 |
| | | | 5798 | | 423 | | 69 | | 16 | | 4 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 |
| | | 15511 | | 978 | | 146 | | 32 | | 8 | | 2 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 |
| | 41835 | | 2283 | | 312 | | 65 | | 16 | | 4 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 | | 1 |
|
A064645 as a square array
1 | 1 | 2 | 4 | 9 | 21 | 51 | 127 | 323 | 835 | 2188 | 5798 | 15511 | 41835
| 1 | 1 | 1 | 2 | 4 | 8 | 17 | 37 | 82 | 185 | 423 | 978 | 2283
| 1 | 1 | 1 | 1 | 2 | 4 | 8 | 16 | 33 | 69 | 146 | 312
| 1 | 1 | 1 | 1 | 1 | 2 | 4 | 8 | 16 | 32 | 65
| 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 8 | 16
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 1 | 1 | 1 | 1 | 1
| 1 | 1 | 1 | 1 | 1
| 1 | 1 | 1 | 1
| 1 | 1 | 1
| 1 | 1
| 1
|
A064645 as an upper right triangle
1 | 1 | 2 | 4 | 9 | 21 | 51 | 127 | 323 | 835 | 2188 | 5798 | 15511 | 41835
| | 1 | 1 | 1 | 2 | 4 | 8 | 17 | 37 | 82 | 185 | 423 | 978 | 2283
| | | 1 | 1 | 1 | 1 | 2 | 4 | 8 | 16 | 33 | 69 | 146 | 312
| | | | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 8 | 16 | 32 | 65
| | | | | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 8 | 16
| | | | | | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4
| | | | | | | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | | | | | | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | | | | | | | | 1 | 1 | 1 | 1 | 1 | 1
| | | | | | | | | | 1 | 1 | 1 | 1 | 1
| | | | | | | | | | | 1 | 1 | 1 | 1
| | | | | | | | | | | | 1 | 1 | 1
| | | | | | | | | | | | | 1 | 1
| | | | | | | | | | | | | | 1
|
|