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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 5 |
| 5 | 16 |
| 6 | 38 |
| 7 | 83 |
| 8 | 167 |
| 9 | 314 |
| 10 | 572 |
| 11 | 1021 |
| 12 | 1757 |
| 13 | 3004 |
| 14 | 5082 |
| 15 | 8439 |
| 16 | 13971 |
| 17 | 23086 |
| 18 | 37576 |
| 19 | 61281 |
| 20 | 99833 |
| 21 | 160912 |
| 22 | 259878 |
| 23 | 420283 |
| 24 | 672847 |
| 25 | 1081058 |
| 26 | 1739124 |
| 27 | 2774021 |
| 28 | 4439701 |
| 29 | 7121188 |
| 30 | 11326386 |
| 31 | 18087487 |
| 32 | 28944587 |
| 33 | 45962070 |
| 34 | 73268704 |
| 35 | 117090409 |
| 36 | 185684721 |
| 37 | 295697784 |
| 38 | 472033278 |
| 39 | 747983491 |
[0,0,0,1,5,16,38,83,167,314,572,1021,1757,3004, 5082,8439,13971,23086,37576,61281,99833,160912, 259878,420283,672847,1081058,1739124,2774021, 4439701,7121188,11326386,18087487,28944587, 45962070,73268704,117090409,185684721,295697784, 472033278,747983491] |