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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 35 |
| 5 | 76 |
| 6 | 90 |
| 7 | 110 |
| 8 | 142 |
| 9 | 198 |
| 10 | 328 |
| 11 | 952 |
| 12 | 9067 |
| 13 | 18996 |
| 14 | 20991 |
| 15 | 23456 |
| 16 | 26575 |
| 17 | 30652 |
| 18 | 36205 |
| 19 | 44217 |
| 20 | 56781 |
| 21 | 79321 |
| 22 | 131533 |
| 23 | 384870 |
| 24 | 5202154 |
| 25 | 10762714 |
[1,2,6,35,76,90,110,142,198,328,952,9067,18996, 20991,23456,26575,30652,36205,44217,56781,79321, 131533,384870,5202154,10762714] |