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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 5 |
| 7 | 10 |
| 8 | 28 |
| 9 | 24 |
| 10 | 50 |
| 11 | 124 |
| 12 | 283 |
| 13 | 528 |
| 14 | 1266 |
| 15 | 3715 |
| 16 | 10702 |
| 17 | 8740 |
| 18 | 15414 |
| 19 | 31988 |
| 20 | 68465 |
| 21 | 160964 |
| 22 | 380124 |
| 23 | 890738 |
| 24 | 2230219 |
| 25 | 3990852 |
| 26 | 8354276 |
| 27 | 20281732 |
| 28 | 46056920 |
| 29 | 131289988 |
| 30 | 349369117 |
| 31 | 1054037937 |
| 32 | 3081527146 |
| 33 | 2440225484 |
| 34 | 4201202020 |
| 35 | 7475926894 |
| 36 | 13276918426 |
[1,1,1,1,2,2,5,10,28,24,50,124,283,528,1266,3715, 10702,8740,15414,31988,68465,160964,380124,890738, 2230219,3990852,8354276,20281732,46056920, 131289988,349369117,1054037937,3081527146, 2440225484,4201202020,7475926894,13276918426] |