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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 3 |
| 7 | 4 |
| 8 | 7 |
| 9 | 9 |
| 10 | 14 |
| 11 | 20 |
| 12 | 29 |
| 13 | 43 |
| 14 | 63 |
| 15 | 92 |
| 16 | 136 |
| 17 | 198 |
| 18 | 291 |
| 19 | 426 |
| 20 | 624 |
| 21 | 915 |
| 22 | 1341 |
| 23 | 1965 |
| 24 | 2881 |
| 25 | 4221 |
| 26 | 6187 |
| 27 | 9067 |
| 28 | 13288 |
| 29 | 19475 |
| 30 | 28542 |
| 31 | 41830 |
| 32 | 61306 |
| 33 | 89847 |
| 34 | 131678 |
| 35 | 192983 |
| 36 | 282830 |
| 37 | 414508 |
| 38 | 607491 |
| 39 | 890321 |
| 40 | 1304830 |
| 41 | 1912320 |
| 42 | 2802642 |
| 43 | 4107471 |
| 44 | 6019791 |
[1,0,1,1,1,2,3,4,7,9,14,20,29,43,63,92,136,198, 291,426,624,915,1341,1965,2881,4221,6187,9067, 13288,19475,28542,41830,61306,89847,131678,192983, 282830,414508,607491,890321,1304830,1912320, 2802642,4107471,6019791] |