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| n | a(n) |
|---|---|
| 5 | 1 |
| 6 | 5 |
| 7 | 29 |
| 8 | 127 |
| 9 | 583 |
| 10 | 2446 |
| 11 | 10484 |
| 12 | 43363 |
| 13 | 181546 |
| 14 | 748840 |
| 15 | 3114308 |
| 16 | 12878441 |
| 17 | 53594473 |
| 18 | 222761422 |
| 19 | 930856456 |
| 20 | 3893811380 |
| 21 | 16365678160 |
| 22 | 68937445765 |
| 23 | 291656714515 |
| 24 | 1237403762663 |
| 25 | 5271285939671 |
| 26 | 22524961082326 |
| 27 | 96620152734652 |
| 28 | 415768621923904 |
| 29 | 1795530067804295 |
[1,5,29,127,583,2446,10484,43363,181546,748840, 3114308,12878441,53594473,222761422,930856456, 3893811380,16365678160,68937445765,291656714515, 1237403762663,5271285939671,22524961082326, 96620152734652,415768621923904,1795530067804295] |