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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 12 |
| 4 | 216 |
| 5 | 10600 |
| 6 | 1306620 |
| 7 | 384471444 |
| 8 | 261548825328 |
| 9 | 402632012394000 |
| 10 | 1381332938730123060 |
| 11 | 10440873023366019273820 |
| 12 | 172308823347127690038311496 |
| 13 | 6163501139185639837183141411320 |
| 14 | 474942255590583211554917995123517868 |
| 15 | 78430816994991932467786587093292327531620 |
[1,2,12,216,10600,1306620,384471444,261548825328, 402632012394000,1381332938730123060, 10440873023366019273820, 172308823347127690038311496, 6163501139185639837183141411320, 474942255590583211554917995123517868, 78430816994991932467786587093292327531620] |