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| n | a(n) |
|---|---|
| 9 | 1 |
| 10 | 1 |
| 11 | 6 |
| 12 | 21 |
| 13 | 64 |
| 14 | 174 |
| 15 | 419 |
| 16 | 930 |
| 17 | 1921 |
| 18 | 3741 |
| 19 | 6933 |
| 20 | 12303 |
| 21 | 21044 |
| 22 | 34839 |
| 23 | 56044 |
| 24 | 87885 |
| 25 | 134682 |
| 26 | 202181 |
| 27 | 297873 |
| 28 | 431423 |
| 29 | 615166 |
| 30 | 864673 |
| 31 | 1199421 |
| 32 | 1643537 |
| 33 | 2226716 |
| 34 | 2985188 |
| 35 | 3962845 |
| 36 | 5212562 |
| 37 | 6797615 |
| 38 | 8793297 |
| 39 | 11288719 |
| 40 | 14388852 |
| 41 | 18216738 |
| 42 | 22915930 |
| 43 | 28653268 |
[1,1,6,21,64,174,419,930,1921,3741,6933,12303, 21044,34839,56044,87885,134682,202181,297873, 431423,615166,864673,1199421,1643537,2226716, 2985188,3962845,5212562,6797615,8793297,11288719, 14388852,18216738,22915930,28653268] |