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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 5 |
| 4 | 15 |
| 5 | 40 |
| 6 | 95 |
| 7 | 214 |
| 8 | 457 |
| 9 | 937 |
| 10 | 1865 |
| 11 | 3602 |
| 12 | 6807 |
| 13 | 12585 |
| 14 | 22875 |
| 15 | 40865 |
| 16 | 72009 |
| 17 | 125127 |
| 18 | 214930 |
| 19 | 364934 |
| 20 | 613515 |
| 21 | 1021345 |
| 22 | 1685654 |
| 23 | 2758549 |
| 24 | 4480070 |
| 25 | 7222057 |
| 26 | 11563479 |
| 27 | 18393005 |
| 28 | 29078137 |
| 29 | 45699763 |
| 30 | 71426896 |
| 31 | 111042494 |
| 32 | 171763067 |
| 33 | 264397434 |
| 34 | 405116786 |
| 35 | 617968699 |
| 36 | 938655535 |
[0,0,1,5,15,40,95,214,457,937,1865,3602,6807, 12585,22875,40865,72009,125127,214930,364934, 613515,1021345,1685654,2758549,4480070,7222057, 11563479,18393005,29078137,45699763,71426896, 111042494,171763067,264397434,405116786,617968699, 938655535] |