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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 8 |
| 6 | 17 |
| 7 | 42 |
| 8 | 107 |
| 9 | 272 |
| 10 | 719 |
| 11 | 1914 |
| 12 | 5163 |
| 13 | 14088 |
| 14 | 38733 |
| 15 | 107370 |
| 16 | 299511 |
| 17 | 840372 |
| 18 | 2370020 |
| 19 | 6714316 |
| 20 | 19100096 |
| 21 | 54534696 |
| 22 | 156230943 |
| 23 | 448942998 |
| 24 | 1293692305 |
| 25 | 3737568960 |
| 26 | 10823759093 |
| 27 | 31413810702 |
| 28 | 91358248179 |
| 29 | 266193726712 |
| 30 | 776989772307 |
| 31 | 2271695757714 |
| 32 | 6652074198889 |
[1,1,2,3,8,17,42,107,272,719,1914,5163,14088, 38733,107370,299511,840372,2370020,6714316, 19100096,54534696,156230943,448942998,1293692305, 3737568960,10823759093,31413810702,91358248179, 266193726712,776989772307,2271695757714, 6652074198889] |