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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 268 |
| 3 | 1073 |
| 4 | 15290 |
| 5 | 16363 |
| 6 | 48016 |
| 7 | 64379 |
| 8 | 176774 |
| 9 | 417927 |
| 10 | 594701 |
| 11 | 1607329 |
| 12 | 5416688 |
| 13 | 44940833 |
| 14 | 140239187 |
| 15 | 185180020 |
| 16 | 1066139287 |
| 17 | 4449737168 |
| 18 | 5515876455 |
| 19 | 81672007538 |
| 20 | 822235951835 |
| 21 | 903907959373 |
| 22 | 18900395139295 |
| 23 | 719118923252583 |
| 24 | 738019318391878 |
[1,1,268,1073,15290,16363,48016,64379,176774, 417927,594701,1607329,5416688,44940833,140239187, 185180020,1066139287,4449737168,5515876455, 81672007538,822235951835,903907959373, 18900395139295,719118923252583,738019318391878] |