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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 31 |
| 4 | 78 |
| 5 | 295 |
| 6 | 959 |
| 7 | 2958 |
| 8 | 9835 |
| 9 | 32104 |
| 10 | 103383 |
| 11 | 337755 |
| 12 | 1101269 |
| 13 | 3580082 |
| 14 | 11672828 |
| 15 | 38060520 |
| 16 | 124033054 |
| 17 | 404479836 |
| 18 | 1319253933 |
| 19 | 4302723870 |
| 20 | 14036075984 |
| 21 | 45792455693 |
| 22 | 149403264722 |
| 23 | 487484967393 |
| 24 | 1590699368682 |
| 25 | 5190766183630 |
[1,11,31,78,295,959,2958,9835,32104,103383,337755, 1101269,3580082,11672828,38060520,124033054, 404479836,1319253933,4302723870,14036075984, 45792455693,149403264722,487484967393, 1590699368682,5190766183630] |