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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 0 |
| 4 | 0 |
| 5 | 2 |
| 6 | 3 |
| 7 | 2 |
| 8 | 5 |
| 9 | 10 |
| 10 | 17 |
| 11 | 22 |
| 12 | 44 |
| 13 | 68 |
| 14 | 127 |
| 15 | 184 |
| 16 | 356 |
| 17 | 530 |
| 18 | 1017 |
| 19 | 1502 |
| 20 | 2906 |
| 21 | 4312 |
| 22 | 8351 |
| 23 | 12388 |
| 24 | 24067 |
| 25 | 35748 |
| 26 | 69577 |
| 27 | 103404 |
| 28 | 201642 |
| 29 | 299882 |
| 30 | 585691 |
| 31 | 871498 |
| 32 | 1704509 |
| 33 | 2537522 |
| 34 | 4969153 |
| 35 | 7400782 |
| 36 | 14508938 |
| 37 | 21617096 |
| 38 | 42422023 |
| 39 | 63226948 |
| 40 | 124191257 |
| 41 | 185155568 |
| 42 | 363985681 |
| 43 | 542815792 |
| 44 | 1067892398 |
| 45 | 1592969006 |
[1,2,0,0,2,3,2,5,10,17,22,44,68,127,184,356,530, 1017,1502,2906,4312,8351,12388,24067,35748,69577, 103404,201642,299882,585691,871498,1704509, 2537522,4969153,7400782,14508938,21617096, 42422023,63226948,124191257,185155568,363985681, 542815792,1067892398,1592969006] |