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| n | a(n) |
|---|---|
| 3 | 344 |
| 4 | 7568 |
| 5 | 133232 |
| 6 | 2145368 |
| 7 | 33235784 |
| 8 | 506005088 |
| 9 | 7642599392 |
| 10 | 115007387048 |
| 11 | 1727691783224 |
| 12 | 25933450204208 |
| 13 | 389128287094352 |
| 14 | 5837810104155128 |
| 15 | 87573352325069864 |
| 16 | 1313643690750940928 |
| 17 | 19704959203995442112 |
| 18 | 295576514963872161608 |
[344,7568,133232,2145368,33235784,506005088, 7642599392,115007387048,1727691783224, 25933450204208,389128287094352,5837810104155128, 87573352325069864,1313643690750940928, 19704959203995442112,295576514963872161608] |