A218580 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 1 |
| | | | | | | | | 1 | | 2 | | 2 |
| | | | | | | | 1 | | 4 | | 5 | | 5 |
| | | | | | | 1 | | 8 | | 13 | | 15 | | 16 |
| | | | | | 1 | | 16 | | 35 | | 47 | | 56 | | 62 |
| | | | | 1 | | 32 | | 97 | | 153 | | 204 | | 248 | | 279 |
| | | | 1 | | 64 | | 275 | | 515 | | 770 | | 1030 | | 1257 | | 1423 |
| | | 1 | | 128 | | 793 | | 1785 | | 3000 | | 4424 | | 5869 | | 7140 | | 8100 |
| | 1 | | 256 | | 2315 | | 6347 | | 12026 | | 19582 | | 28293 | | 37058 | | 44843 | | 50887 |
|
A218580 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256
| 2 | 5 | 13 | 35 | 97 | 275 | 793 | 2315
| 5 | 15 | 47 | 153 | 515 | 1785 | 6347
| 16 | 56 | 204 | 770 | 3000 | 12026
| 62 | 248 | 1030 | 4424 | 19582
| 279 | 1257 | 5869 | 28293
| 1423 | 7140 | 37058
| 8100 | 44843
| 50887
|
A218580 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256
| | | 2 | 5 | 13 | 35 | 97 | 275 | 793 | 2315
| | | | 5 | 15 | 47 | 153 | 515 | 1785 | 6347
| | | | | 16 | 56 | 204 | 770 | 3000 | 12026
| | | | | | 62 | 248 | 1030 | 4424 | 19582
| | | | | | | 279 | 1257 | 5869 | 28293
| | | | | | | | 1423 | 7140 | 37058
| | | | | | | | | 8100 | 44843
| | | | | | | | | | 50887
|
|