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| n | a(n) |
|---|---|
| 1 | 42 |
| 2 | 1764 |
| 3 | 1728 |
| 4 | 8244 |
| 5 | 30056 |
| 6 | 85536 |
| 7 | 263550 |
| 8 | 876860 |
| 9 | 2830656 |
| 10 | 8637716 |
| 11 | 26358144 |
| 12 | 82906122 |
| 13 | 259356680 |
| 14 | 797032056 |
| 15 | 2446151996 |
| 16 | 7564283208 |
| 17 | 23414818812 |
| 18 | 72062481458 |
| 19 | 221435203512 |
| 20 | 682319992200 |
| 21 | 2103278142776 |
| 22 | 6472523087596 |
[42,1764,1728,8244,30056,85536,263550,876860, 2830656,8637716,26358144,82906122,259356680, 797032056,2446151996,7564283208,23414818812, 72062481458,221435203512,682319992200, 2103278142776,6472523087596] |