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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 48387 |
| 16 | 338709 |
| 17 | 768096 |
| 18 | 4693920 |
| 19 | 33284160 |
| 20 | 179734464 |
| 21 | 912632160 |
| 22 | 4397227680 |
| 23 | 20128275720 |
| 24 | 87222528120 |
| 25 | 358733348064 |
| 26 | 1407338519328 |
| 27 | 5266329775168 |
| 28 | 18808320625600 |
[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,48387,338709, 768096,4693920,33284160,179734464,912632160, 4397227680,20128275720,87222528120,358733348064, 1407338519328,5266329775168,18808320625600] |