A054630 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 2 | | 3 |
| | | | | | | | | 3 | | 6 | | 11 |
| | | | | | | | 4 | | 10 | | 24 | | 70 |
| | | | | | | 5 | | 15 | | 45 | | 165 | | 629 |
| | | | | | 6 | | 21 | | 76 | | 336 | | 1560 | | 7826 |
| | | | | 7 | | 28 | | 119 | | 616 | | 3367 | | 19684 | | 117655 |
| | | | 8 | | 36 | | 176 | | 1044 | | 6560 | | 43800 | | 299600 | | 2097684 |
| | | 9 | | 45 | | 249 | | 1665 | | 11817 | | 88725 | | 683289 | | 5381685 | | 43046889 |
| | 10 | | 55 | | 340 | | 2530 | | 20008 | | 166870 | | 1428580 | | 12501280 | | 111111340 | | 1000010044 |
|
A054630 as a square array
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| 3 | 6 | 10 | 15 | 21 | 28 | 36 | 45 | 55
| 11 | 24 | 45 | 76 | 119 | 176 | 249 | 340
| 70 | 165 | 336 | 616 | 1044 | 1665 | 2530
| 629 | 1560 | 3367 | 6560 | 11817 | 20008
| 7826 | 19684 | 43800 | 88725 | 166870
| 117655 | 299600 | 683289 | 1428580
| 2097684 | 5381685 | 12501280
| 43046889 | 111111340
| 1000010044
|
A054630 as an upper right triangle
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
| | 3 | 6 | 10 | 15 | 21 | 28 | 36 | 45 | 55
| | | 11 | 24 | 45 | 76 | 119 | 176 | 249 | 340
| | | | 70 | 165 | 336 | 616 | 1044 | 1665 | 2530
| | | | | 629 | 1560 | 3367 | 6560 | 11817 | 20008
| | | | | | 7826 | 19684 | 43800 | 88725 | 166870
| | | | | | | 117655 | 299600 | 683289 | 1428580
| | | | | | | | 2097684 | 5381685 | 12501280
| | | | | | | | | 43046889 | 111111340
| | | | | | | | | | 1000010044
|
|