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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 6 |
| 6 | 11 |
| 7 | 21 |
| 8 | 41 |
| 9 | 79 |
| 10 | 152 |
| 11 | 293 |
| 12 | 565 |
| 13 | 1089 |
| 14 | 2099 |
| 15 | 4046 |
| 16 | 7799 |
| 17 | 15033 |
| 18 | 28977 |
| 19 | 55855 |
| 20 | 107664 |
| 21 | 207529 |
| 22 | 400025 |
| 23 | 771073 |
| 24 | 1486291 |
| 25 | 2864918 |
| 26 | 5522307 |
| 27 | 10644589 |
| 28 | 20518105 |
| 29 | 39549919 |
| 30 | 76234920 |
| 31 | 146947533 |
| 32 | 283250477 |
| 33 | 545982849 |
| 34 | 1052415779 |
| 35 | 2028596638 |
[0,1,1,1,3,6,11,21,41,79,152,293,565,1089,2099, 4046,7799,15033,28977,55855,107664,207529,400025, 771073,1486291,2864918,5522307,10644589,20518105, 39549919,76234920,146947533,283250477,545982849, 1052415779,2028596638] |