A171505 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 3 | | 1 |
| | | | | | | | | 10 | | 6 | | 1 |
| | | | | | | | 34 | | 29 | | 9 | | 1 |
| | | | | | | 117 | | 128 | | 57 | | 12 | | 1 |
| | | | | | 405 | | 538 | | 309 | | 94 | | 15 | | 1 |
| | | | | 1407 | | 2192 | | 1533 | | 604 | | 140 | | 18 | | 1 |
| | | | 4899 | | 8740 | | 7179 | | 3453 | | 1040 | | 195 | | 21 | | 1 |
| | | 17083 | | 34296 | | 32278 | | 18264 | | 6730 | | 1644 | | 259 | | 24 | | 1 |
| | 59629 | | 132929 | | 140790 | | 91372 | | 39668 | | 11877 | | 2443 |
|
A171505 as a square array
1 | 3 | 10 | 34 | 117 | 405 | 1407 | 4899 | 17083 | 59629
| 1 | 6 | 29 | 128 | 538 | 2192 | 8740 | 34296 | 132929
| 1 | 9 | 57 | 309 | 1533 | 7179 | 32278 | 140790
| 1 | 12 | 94 | 604 | 3453 | 18264 | 91372
| 1 | 15 | 140 | 1040 | 6730 | 39668
| 1 | 18 | 195 | 1644 | 11877
| 1 | 21 | 259 | 2443
| 1 | 24
| 1
|
A171505 as an upper right triangle
1 | 3 | 10 | 34 | 117 | 405 | 1407 | 4899 | 17083 | 59629
| | 1 | 6 | 29 | 128 | 538 | 2192 | 8740 | 34296 | 132929
| | | 1 | 9 | 57 | 309 | 1533 | 7179 | 32278 | 140790
| | | | 1 | 12 | 94 | 604 | 3453 | 18264 | 91372
| | | | | 1 | 15 | 140 | 1040 | 6730 | 39668
| | | | | | 1 | 18 | 195 | 1644 | 11877
| | | | | | | 1 | 21 | 259 | 2443
| | | | | | | | 1 | 24
| | | | | | | | | 1
| | | | | | | | |
|
|