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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 3 |
| 8 | 7 |
| 9 | 8 |
| 10 | 15 |
| 11 | 19 |
| 12 | 36 |
| 13 | 46 |
| 14 | 79 |
| 15 | 110 |
| 16 | 181 |
| 17 | 254 |
| 18 | 407 |
| 19 | 580 |
| 20 | 907 |
| 21 | 1309 |
| 22 | 2004 |
| 23 | 2909 |
| 24 | 4410 |
| 25 | 6407 |
| 26 | 9599 |
| 27 | 13984 |
| 28 | 20782 |
| 29 | 30252 |
| 30 | 44677 |
| 31 | 64967 |
| 32 | 95414 |
| 33 | 138563 |
| 34 | 202527 |
| 35 | 293583 |
| 36 | 427442 |
| 37 | 618337 |
| 38 | 897023 |
| 39 | 1295020 |
| 40 | 1872696 |
| 41 | 2697777 |
| 42 | 3889964 |
| 43 | 5591917 |
| 44 | 8041593 |
| 45 | 11535890 |
[1,0,0,0,1,1,3,3,7,8,15,19,36,46,79,110,181,254, 407,580,907,1309,2004,2909,4410,6407,9599,13984, 20782,30252,44677,64967,95414,138563,202527, 293583,427442,618337,897023,1295020,1872696, 2697777,3889964,5591917,8041593,11535890] |