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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1287 |
| 2 | 429429 |
| 3 | 61408347 |
| 4 | 4789851066 |
| 5 | 235234907908 |
| 6 | 7997986868872 |
| 7 | 201299981193168 |
| 8 | 3940599631842016 |
| 9 | 62305564808355232 |
| 10 | 819557814017595744 |
| 11 | 9183250377581777952 |
| 12 | 89360090212622685456 |
| 13 | 767243308499780749560 |
| 14 | 5890437072025627650100 |
[1,1287,429429,61408347,4789851066,235234907908, 7997986868872,201299981193168,3940599631842016, 62305564808355232,819557814017595744, 9183250377581777952,89360090212622685456, 767243308499780749560,5890437072025627650100] |