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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 108 |
| 7 | 0 |
| 8 | 5124 |
| 9 | 0 |
| 10 | 198364 |
| 11 | 0 |
| 12 | 7316404 |
| 13 | 0 |
| 14 | 266099052 |
| 15 | 0 |
| 16 | 9635242692 |
| 17 | 0 |
| 18 | 348371291676 |
| 19 | 0 |
| 20 | 12589359561300 |
| 21 | 0 |
| 22 | 454871893274732 |
| 23 | 0 |
| 24 | 16434178541015076 |
| 25 | 0 |
| 26 | 593741680769005980 |
| 27 | 0 |
| 28 | 21450813362014160244 |
| 29 | 0 |
| 30 | 774977008153111237100 |
| 31 | 0 |
[0,0,0,0,0,0,108,0,5124,0,198364,0,7316404,0, 266099052,0,9635242692,0,348371291676,0, 12589359561300,0,454871893274732,0, 16434178541015076,0,593741680769005980,0, 21450813362014160244,0,774977008153111237100,0] |