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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 24 |
| 5 | 96 |
| 6 | 384 |
| 7 | 1536 |
| 8 | 6144 |
| 9 | 24576 |
| 10 | 98304 |
| 11 | 380094 |
| 12 | 1455278 |
| 13 | 5590035 |
| 14 | 21674069 |
| 15 | 84319556 |
| 16 | 328215940 |
| 17 | 1277085588 |
| 18 | 4967343120 |
| 19 | 19314847344 |
| 20 | 75083658528 |
| 21 | 291820729296 |
| 22 | 1134067262088 |
| 23 | 4407118055652 |
| 24 | 17128140069700 |
| 25 | 66573579108036 |
[1,2,6,24,96,384,1536,6144,24576,98304,380094, 1455278,5590035,21674069,84319556,328215940, 1277085588,4967343120,19314847344,75083658528, 291820729296,1134067262088,4407118055652, 17128140069700,66573579108036] |