A261781 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 0 | | 1 |
| | | | | | | | 0 | | 2 | | 3 |
| | | | | | | 0 | | 4 | | 16 | | 13 |
| | | | | | 0 | | 8 | | 66 | | 132 | | 75 |
| | | | | 0 | | 16 | | 248 | | 924 | | 1232 | | 541 |
| | | | 0 | | 32 | | 892 | | 5546 | | 13064 | | 13060 | | 4683 |
| | | 0 | | 64 | | 3136 | | 30720 | | 114032 | | 195020 | | 155928 | | 47293 |
| | 0 | | 128 | | 10888 | | 162396 | | 893490 | | 2327960 | | 3116220 | | 2075948 | | 545835 |
|
A261781 as a square array
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128
| 3 | 16 | 66 | 248 | 892 | 3136 | 10888
| 13 | 132 | 924 | 5546 | 30720 | 162396
| 75 | 1232 | 13064 | 114032 | 893490
| 541 | 13060 | 195020 | 2327960
| 4683 | 155928 | 3116220
| 47293 | 2075948
| 545835
|
A261781 as an upper right triangle
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0
| | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128
| | | 3 | 16 | 66 | 248 | 892 | 3136 | 10888
| | | | 13 | 132 | 924 | 5546 | 30720 | 162396
| | | | | 75 | 1232 | 13064 | 114032 | 893490
| | | | | | 541 | 13060 | 195020 | 2327960
| | | | | | | 4683 | 155928 | 3116220
| | | | | | | | 47293 | 2075948
| | | | | | | | | 545835
|
|