A027538 as a triangular array
| | | | | | | | 1 |
| | | | | | | | 7 | | 1 |
| | | | | | | 163 | | 52 | | 1 |
| | | | | | 8873 | | 4719 | | 231 | | 1 |
| | | | | 930581 | | 731646 | | 64966 | | 806 | | 1 |
| | | | 166430695 | | 180969681 | | 25235006 | | 610166 | | 2451 | | 1 |
| | | 46667364787 | | 67248150516 | | 13560308427 | | 543687292 | | 4546137 | | 6840 | | 1 |
| | 19297882224241 | | 35761409868799 | | 9882496297869 |
|
A027538 as a square array
| 1 | 7 | 163 | 8873 | 930581 | 166430695 | 46667364787 | 19297882224241
| | 1 | 52 | 4719 | 731646 | 180969681 | 67248150516 | 35761409868799
| | 1 | 231 | 64966 | 25235006 | 13560308427 | 9882496297869
| | 1 | 806 | 610166 | 543687292
| | 1 | 2451 | 4546137
| | 1 | 6840
| | 1
|
A027538 as an upper right triangle
| 1 | 7 | 163 | 8873 | 930581 | 166430695 | 46667364787 | 19297882224241
| | 1 | 52 | 4719 | 731646 | 180969681 | 67248150516 | 35761409868799
| | | 1 | 231 | 64966 | 25235006 | 13560308427 | 9882496297869
| | | | 1 | 806 | 610166 | 543687292
| | | | | 1 | 2451 | 4546137
| | | | | | 1 | 6840
| | | | | | | 1
| | | | | | |
|
|
