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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 66 |
| 3 | 286 |
| 4 | 1001 |
| 5 | 3003 |
| 6 | 8008 |
| 7 | 19448 |
| 8 | 43758 |
| 9 | 92378 |
| 10 | 184755 |
| 11 | 352705 |
| 12 | 646580 |
| 13 | 1143780 |
| 14 | 1960255 |
| 15 | 3265757 |
| 16 | 5303727 |
| 17 | 8416837 |
| 18 | 13079352 |
| 19 | 19937632 |
| 20 | 29860259 |
| 21 | 43999449 |
| 22 | 63865594 |
| 23 | 91416974 |
[1,11,66,286,1001,3003,8008,19448,43758,92378, 184755,352705,646580,1143780,1960255,3265757, 5303727,8416837,13079352,19937632,29860259, 43999449,63865594,91416974] |