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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 10 |
| 5 | 23 |
| 6 | 51 |
| 7 | 111 |
| 8 | 243 |
| 9 | 530 |
| 10 | 1156 |
| 11 | 2497 |
| 12 | 5421 |
| 13 | 11662 |
| 14 | 25179 |
| 15 | 53991 |
| 16 | 116035 |
| 17 | 248025 |
| 18 | 531045 |
| 19 | 1131943 |
| 20 | 2415495 |
| 21 | 5135914 |
| 22 | 10927905 |
| 23 | 23182313 |
| 24 | 49199819 |
| 25 | 104154950 |
| 26 | 220543471 |
| 27 | 465997148 |
| 28 | 984704560 |
| 29 | 2076988713 |
| 30 | 4380764650 |
| 31 | 9225209928 |
| 32 | 19424814305 |
[1,1,2,5,10,23,51,111,243,530,1156,2497,5421, 11662,25179,53991,116035,248025,531045,1131943, 2415495,5135914,10927905,23182313,49199819, 104154950,220543471,465997148,984704560, 2076988713,4380764650,9225209928,19424814305] |