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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 3 |
| 4 | 24 |
| 5 | 7 |
| 6 | 112 |
| 7 | 79 |
| 8 | 352 |
| 9 | 287 |
| 10 | 1472 |
| 11 | 1855 |
| 12 | 4480 |
| 13 | 2175 |
| 14 | 28416 |
| 15 | 29951 |
| 16 | 71168 |
| 17 | 37375 |
| 18 | 449536 |
| 19 | 521215 |
| 20 | 1054720 |
| 21 | 1017855 |
| 22 | 6352896 |
| 23 | 1789951 |
| 24 | 29974528 |
| 25 | 16850943 |
| 26 | 100515840 |
| 27 | 103235583 |
| 28 | 330399744 |
| 29 | 109608959 |
| 30 | 1928265728 |
| 31 | 57999359 |
| 32 | 8473935872 |
| 33 | 2626813951 |
[1,1,4,3,24,7,112,79,352,287,1472,1855,4480,2175, 28416,29951,71168,37375,449536,521215,1054720, 1017855,6352896,1789951,29974528,16850943, 100515840,103235583,330399744,109608959, 1928265728,57999359,8473935872,2626813951] |