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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 5 |
| 4 | 14 |
| 5 | 33 |
| 6 | 67 |
| 7 | 127 |
| 8 | 226 |
| 9 | 382 |
| 10 | 628 |
| 11 | 993 |
| 12 | 1541 |
| 13 | 2327 |
| 14 | 3468 |
| 15 | 5054 |
| 16 | 7297 |
| 17 | 10350 |
| 18 | 14568 |
| 19 | 20210 |
| 20 | 27854 |
| 21 | 37940 |
| 22 | 51381 |
| 23 | 68891 |
| 24 | 91910 |
| 25 | 121575 |
| 26 | 160092 |
| 27 | 209282 |
| 28 | 272447 |
| 29 | 352434 |
| 30 | 454197 |
| 31 | 582065 |
| 32 | 743347 |
| 33 | 944657 |
| 34 | 1196586 |
| 35 | 1509043 |
| 36 | 1897428 |
| 37 | 2376287 |
| 38 | 2967707 |
| 39 | 3693102 |
| 40 | 4583742 |
[0,0,1,5,14,33,67,127,226,382,628,993,1541,2327, 3468,5054,7297,10350,14568,20210,27854,37940, 51381,68891,91910,121575,160092,209282,272447, 352434,454197,582065,743347,944657,1196586, 1509043,1897428,2376287,2967707,3693102,4583742] |