A218638 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 3 | | 1 |
| | | | | | | | 7 | | 15 | | 1 |
| | | | | | | 15 | | 63 | | 63 | | 1 |
| | | | | | 29 | | 255 | | 511 | | 251 | | 1 |
| | | | | 57 | | 1017 | | 4095 | | 4087 | | 1001 | | 1 |
| | | | 113 | | 4065 | | 32753 | | 65523 | | 32689 | | 4001 | | 1 |
| | | 225 | | 16257 | | 262017 | | 1048363 | | 1048353 | | 261505 | | 16001 | | 1 |
| | 449 | | 65025 | | 2096129 | | 16773477 | | 33546641 | | 16773633 | | 2092027 | | 63985 | | 1 |
|
A218638 as a square array
| 1 | 3 | 7 | 15 | 29 | 57 | 113 | 225 | 449
| | 1 | 15 | 63 | 255 | 1017 | 4065 | 16257 | 65025
| | 1 | 63 | 511 | 4095 | 32753 | 262017 | 2096129
| | 1 | 251 | 4087 | 65523 | 1048363 | 16773477
| | 1 | 1001 | 32689 | 1048353 | 33546641
| | 1 | 4001 | 261505 | 16773633
| | 1 | 16001 | 2092027
| | 1 | 63985
| | 1
|
A218638 as an upper right triangle
| 1 | 3 | 7 | 15 | 29 | 57 | 113 | 225 | 449
| | 1 | 15 | 63 | 255 | 1017 | 4065 | 16257 | 65025
| | | 1 | 63 | 511 | 4095 | 32753 | 262017 | 2096129
| | | | 1 | 251 | 4087 | 65523 | 1048363 | 16773477
| | | | | 1 | 1001 | 32689 | 1048353 | 33546641
| | | | | | 1 | 4001 | 261505 | 16773633
| | | | | | | 1 | 16001 | 2092027
| | | | | | | | 1 | 63985
| | | | | | | | | 1
|
|
