A274293 as a triangular array
| | | | | | | | | | | 1 |
| | | | | | | | | | | 1 | | 1 |
| | | | | | | | | | 1 | | 3 | | 2 |
| | | | | | | | | 1 | | 7 | | 6 | | 6 |
| | | | | | | | 1 | | 15 | | 14 | | 20 | | 20 |
| | | | | | | 1 | | 31 | | 30 | | 50 | | 70 | | 70 |
| | | | | | 1 | | 63 | | 62 | | 112 | | 182 | | 252 | | 252 |
| | | | | 1 | | 127 | | 126 | | 238 | | 420 | | 672 | | 924 | | 924 |
| | | | 1 | | 255 | | 254 | | 492 | | 912 | | 1584 | | 2508 | | 3432 | | 3432 |
| | | 1 | | 511 | | 510 | | 1002 | | 1914 | | 3498 | | 6006 | | 9438 | | 12870 | | 12870 |
| | 1 | | 1023 | | 1022 | | 2024 | | 3938 | | 7436 | | 13442 | | 22880 | | 35750 | | 48620 | | 48620 |
|
A274293 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 3 | 7 | 15 | 31 | 63 | 127 | 255 | 511 | 1023
| 2 | 6 | 14 | 30 | 62 | 126 | 254 | 510 | 1022
| 6 | 20 | 50 | 112 | 238 | 492 | 1002 | 2024
| 20 | 70 | 182 | 420 | 912 | 1914 | 3938
| 70 | 252 | 672 | 1584 | 3498 | 7436
| 252 | 924 | 2508 | 6006 | 13442
| 924 | 3432 | 9438 | 22880
| 3432 | 12870 | 35750
| 12870 | 48620
| 48620
|
A274293 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 3 | 7 | 15 | 31 | 63 | 127 | 255 | 511 | 1023
| | | 2 | 6 | 14 | 30 | 62 | 126 | 254 | 510 | 1022
| | | | 6 | 20 | 50 | 112 | 238 | 492 | 1002 | 2024
| | | | | 20 | 70 | 182 | 420 | 912 | 1914 | 3938
| | | | | | 70 | 252 | 672 | 1584 | 3498 | 7436
| | | | | | | 252 | 924 | 2508 | 6006 | 13442
| | | | | | | | 924 | 3432 | 9438 | 22880
| | | | | | | | | 3432 | 12870 | 35750
| | | | | | | | | | 12870 | 48620
| | | | | | | | | | | 48620
|
|