| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 2 |
| 10 | 6 |
| 11 | 6 |
| 12 | 22 |
| 13 | 22 |
| 14 | 60 |
| 15 | 159 |
| 16 | 377 |
| 17 | 377 |
| 18 | 1007 |
| 19 | 1007 |
| 20 | 2867 |
| 21 | 8147 |
| 22 | 22403 |
| 23 | 22403 |
| 24 | 67808 |
| 25 | 176128 |
| 26 | 495053 |
| 27 | 1362240 |
| 28 | 4210266 |
| 29 | 4210266 |
| 30 | 14223808 |
| 31 | 14223808 |
| 32 | 42235255 |
| 33 | 129279396 |
| 34 | 370630653 |
| 35 | 1178215490 |
[1,1,1,1,1,1,1,1,1,2,6,6,22,22,60,159,377,377, 1007,1007,2867,8147,22403,22403,67808,176128, 495053,1362240,4210266,4210266,14223808,14223808, 42235255,129279396,370630653,1178215490] |