The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 5 | 24 |
| 6 | 368 |
| 7 | 2736 |
| 8 | 13712 |
| 9 | 53121 |
| 10 | 171258 |
| 11 | 480711 |
| 12 | 1210572 |
| 13 | 2793219 |
| 14 | 5996562 |
| 15 | 12117677 |
| 16 | 23257104 |
| 17 | 42696758 |
| 18 | 75408396 |
| 19 | 128723898 |
| 20 | 213203256 |
| 21 | 343741122 |
| 22 | 540958044 |
| 23 | 832928118 |
| 24 | 1257300704 |
| 25 | 1863880095 |
| 26 | 2717733590 |
| 27 | 3902905305 |
| 28 | 5526820260 |
| 29 | 7725470805 |
[24,368,2736,13712,53121,171258,480711,1210572, 2793219,5996562,12117677,23257104,42696758, 75408396,128723898,213203256,343741122,540958044, 832928118,1257300704,1863880095,2717733590, 3902905305,5526820260,7725470805] |