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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 5 |
| 6 | 5 |
| 7 | 15 |
| 8 | 17 |
| 9 | 78 |
| 10 | 102 |
| 11 | 569 |
| 12 | 919 |
| 13 | 6143 |
| 14 | 11171 |
| 15 | 86082 |
| 16 | 175170 |
| 17 | 1500089 |
| 18 | 3364343 |
| 19 | 31536051 |
| 20 | 77010521 |
| 21 | 782091916 |
| 22 | 2060257730 |
| 23 | 22485413587 |
| 24 | 63440153687 |
| 25 | 739249776945 |
| 26 | 2220625119939 |
| 27 | 27479009460738 |
| 28 | 87449057712710 |
[1,1,2,2,5,5,15,17,78,102,569,919,6143,11171, 86082,175170,1500089,3364343,31536051,77010521, 782091916,2060257730,22485413587,63440153687, 739249776945,2220625119939,27479009460738, 87449057712710] |