A013618 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 11 |
| | | | | | | | 1 | | 22 | | 121 |
| | | | | | | 1 | | 33 | | 363 | | 1331 |
| | | | | | 1 | | 44 | | 726 | | 5324 | | 14641 |
| | | | | 1 | | 55 | | 1210 | | 13310 | | 73205 | | 161051 |
| | | | 1 | | 66 | | 1815 | | 26620 | | 219615 | | 966306 | | 1771561 |
| | | 1 | | 77 | | 2541 | | 46585 | | 512435 | | 3382071 | | 12400927 | | 19487171 |
| | 1 | | 88 | | 3388 | | 74536 | | 1024870 | | 9018856 | | 49603708 | | 155897368 | | 214358881 |
|
A013618 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 11 | 22 | 33 | 44 | 55 | 66 | 77 | 88
| 121 | 363 | 726 | 1210 | 1815 | 2541 | 3388
| 1331 | 5324 | 13310 | 26620 | 46585 | 74536
| 14641 | 73205 | 219615 | 512435 | 1024870
| 161051 | 966306 | 3382071 | 9018856
| 1771561 | 12400927 | 49603708
| 19487171 | 155897368
| 214358881
|
A013618 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 11 | 22 | 33 | 44 | 55 | 66 | 77 | 88
| | | 121 | 363 | 726 | 1210 | 1815 | 2541 | 3388
| | | | 1331 | 5324 | 13310 | 26620 | 46585 | 74536
| | | | | 14641 | 73205 | 219615 | 512435 | 1024870
| | | | | | 161051 | 966306 | 3382071 | 9018856
| | | | | | | 1771561 | 12400927 | 49603708
| | | | | | | | 19487171 | 155897368
| | | | | | | | | 214358881
|
|