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| n | a(n) |
|---|---|
| 1 | 9160 |
| 2 | 26710 |
| 3 | 79740 |
| 4 | 240144 |
| 5 | 721644 |
| 6 | 2144132 |
| 7 | 6242596 |
| 8 | 17629584 |
| 9 | 51324016 |
| 10 | 150838232 |
| 11 | 444777588 |
| 12 | 1311902606 |
| 13 | 3863379144 |
| 14 | 11344019324 |
| 15 | 33217022852 |
| 16 | 97452211700 |
| 17 | 286572431480 |
| 18 | 843400469300 |
| 19 | 2482367633512 |
| 20 | 7303546874830 |
[9160,26710,79740,240144,721644,2144132,6242596, 17629584,51324016,150838232,444777588,1311902606, 3863379144,11344019324,33217022852,97452211700, 286572431480,843400469300,2482367633512, 7303546874830] |