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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 44 |
| 3 | 0 |
| 4 | 924 |
| 5 | 0 |
| 6 | 12320 |
| 7 | 0 |
| 8 | 117084 |
| 9 | 0 |
| 10 | 844536 |
| 11 | 4194304 |
| 12 | 4812192 |
| 13 | 0 |
| 14 | 22297792 |
| 15 | 92274688 |
| 16 | 86075484 |
| 17 | 0 |
| 18 | 283367436 |
| 19 | 968884224 |
| 20 | 815677016 |
| 21 | 0 |
| 22 | 2108077536 |
| 23 | 6551502848 |
| 24 | 5012882336 |
| 25 | 0 |
| 26 | 11159625400 |
| 27 | 32619102208 |
| 28 | 23460347328 |
| 29 | 0 |
| 30 | 46790491968 |
| 31 | 129830486016 |
| 32 | 89096422492 |
[1,0,44,0,924,0,12320,0,117084,0,844536,4194304, 4812192,0,22297792,92274688,86075484,0,283367436, 968884224,815677016,0,2108077536,6551502848, 5012882336,0,11159625400,32619102208,23460347328, 0,46790491968,129830486016,89096422492] |