A021010 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | -1 | | 1 |
| | | | | | | | | 1 | | -4 | | 2 |
| | | | | | | | -1 | | 9 | | -18 | | 6 |
| | | | | | | 1 | | -16 | | 72 | | -96 | | 24 |
| | | | | | -1 | | 25 | | -200 | | 600 | | -600 | | 120 |
| | | | | 1 | | -36 | | 450 | | -2400 | | 5400 | | -4320 | | 720 |
| | | | -1 | | 49 | | -882 | | 7350 | | -29400 | | 52920 | | -35280 | | 5040 |
| | | 1 | | -64 | | 1568 | | -18816 | | 117600 | | -376320 | | 564480 | | -322560 | | 40320 |
| | -1 | | 81 | | -2592 | | 42336 | | -381024 | | 1905120 | | -5080320 | | 6531840 | | -3265920 | | 362880 |
|
A021010 as a square array
1 | -1 | 1 | -1 | 1 | -1 | 1 | -1 | 1 | -1
| 1 | -4 | 9 | -16 | 25 | -36 | 49 | -64 | 81
| 2 | -18 | 72 | -200 | 450 | -882 | 1568 | -2592
| 6 | -96 | 600 | -2400 | 7350 | -18816 | 42336
| 24 | -600 | 5400 | -29400 | 117600 | -381024
| 120 | -4320 | 52920 | -376320 | 1905120
| 720 | -35280 | 564480 | -5080320
| 5040 | -322560 | 6531840
| 40320 | -3265920
| 362880
|
A021010 as an upper right triangle
1 | -1 | 1 | -1 | 1 | -1 | 1 | -1 | 1 | -1
| | 1 | -4 | 9 | -16 | 25 | -36 | 49 | -64 | 81
| | | 2 | -18 | 72 | -200 | 450 | -882 | 1568 | -2592
| | | | 6 | -96 | 600 | -2400 | 7350 | -18816 | 42336
| | | | | 24 | -600 | 5400 | -29400 | 117600 | -381024
| | | | | | 120 | -4320 | 52920 | -376320 | 1905120
| | | | | | | 720 | -35280 | 564480 | -5080320
| | | | | | | | 5040 | -322560 | 6531840
| | | | | | | | | 40320 | -3265920
| | | | | | | | | | 362880
|
|