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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 5 |
| 6 | 10 |
| 7 | 17 |
| 8 | 33 |
| 9 | 62 |
| 10 | 127 |
| 11 | 267 |
| 12 | 587 |
| 13 | 1326 |
| 14 | 3085 |
| 15 | 7326 |
| 16 | 17731 |
| 17 | 43585 |
| 18 | 108563 |
| 19 | 273544 |
| 20 | 696113 |
| 21 | 1787042 |
| 22 | 4623125 |
| 23 | 12043071 |
| 24 | 31565842 |
| 25 | 83200763 |
| 26 | 220413272 |
| 27 | 586625403 |
| 28 | 1567930743 |
| 29 | 4207181144 |
| 30 | 11329835687 |
| 31 | 30613313339 |
| 32 | 82975300030 |
| 33 | 225552632043 |
| 34 | 614787508640 |
[1,1,3,5,10,17,33,62,127,267,587,1326,3085,7326, 17731,43585,108563,273544,696113,1787042,4623125, 12043071,31565842,83200763,220413272,586625403, 1567930743,4207181144,11329835687,30613313339, 82975300030,225552632043,614787508640] |