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| n | a(n) |
|---|---|
| 1 | 42 |
| 2 | 1764 |
| 3 | 14946 |
| 4 | 95265 |
| 5 | 512525 |
| 6 | 2187162 |
| 7 | 8948825 |
| 8 | 33334858 |
| 9 | 118218298 |
| 10 | 407541686 |
| 11 | 1356203815 |
| 12 | 4445860245 |
| 13 | 14341519236 |
| 14 | 45718076241 |
| 15 | 144724484598 |
| 16 | 454821046092 |
| 17 | 1423168065858 |
| 18 | 4437094512913 |
| 19 | 13793035672329 |
| 20 | 42793311531894 |
[42,1764,14946,95265,512525,2187162,8948825, 33334858,118218298,407541686,1356203815, 4445860245,14341519236,45718076241,144724484598, 454821046092,1423168065858,4437094512913, 13793035672329,42793311531894] |