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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 7 |
| 5 | 14 |
| 6 | 29 |
| 7 | 57 |
| 8 | 110 |
| 9 | 217 |
| 10 | 417 |
| 11 | 794 |
| 12 | 1513 |
| 13 | 2860 |
| 14 | 5373 |
| 15 | 10063 |
| 16 | 18740 |
| 17 | 34750 |
| 18 | 64221 |
| 19 | 118199 |
| 20 | 216775 |
| 21 | 396297 |
| 22 | 722136 |
| 23 | 1311888 |
| 24 | 2376575 |
| 25 | 4293407 |
| 26 | 7735941 |
| 27 | 13903985 |
| 28 | 24929763 |
| 29 | 44595606 |
| 30 | 79598328 |
| 31 | 141770576 |
| 32 | 251984463 |
| 33 | 446991405 |
| 34 | 791391545 |
| 35 | 1398551523 |
[1,1,1,4,7,14,29,57,110,217,417,794,1513,2860, 5373,10063,18740,34750,64221,118199,216775,396297, 722136,1311888,2376575,4293407,7735941,13903985, 24929763,44595606,79598328,141770576,251984463, 446991405,791391545,1398551523] |