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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 12 |
| 5 | 25 |
| 6 | 50 |
| 7 | 120 |
| 8 | 344 |
| 9 | 400 |
| 10 | 770 |
| 11 | 1120 |
| 12 | 3920 |
| 13 | 13566 |
| 14 | 13734 |
| 15 | 19845 |
| 16 | 22748 |
| 17 | 148148 |
| 18 | 167854 |
| 19 | 176220 |
| 20 | 889896 |
| 21 | 2946216 |
| 22 | 3685416 |
| 23 | 5072256 |
| 24 | 7139280 |
| 25 | 8521056 |
| 26 | 9058900 |
| 27 | 9625336 |
| 28 | 17825857 |
| 29 | 19392072 |
| 30 | 27504848 |
| 31 | 76952788 |
| 32 | 106691001 |
| 33 | 162789696 |
| 34 | 198582784 |
| 35 | 212847225 |
[1,2,9,12,25,50,120,344,400,770,1120,3920,13566, 13734,19845,22748,148148,167854,176220,889896, 2946216,3685416,5072256,7139280,8521056,9058900, 9625336,17825857,19392072,27504848,76952788, 106691001,162789696,198582784,212847225] |