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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 2 |
| 3 | 1 |
| 4 | 4 |
| 5 | 6 |
| 6 | 13 |
| 7 | 23 |
| 8 | 44 |
| 9 | 82 |
| 10 | 154 |
| 11 | 292 |
| 12 | 547 |
| 13 | 1036 |
| 14 | 1943 |
| 15 | 3672 |
| 16 | 6900 |
| 17 | 13022 |
| 18 | 24498 |
| 19 | 46194 |
| 20 | 86958 |
| 21 | 163892 |
| 22 | 308624 |
| 23 | 581532 |
| 24 | 1095275 |
| 25 | 2063534 |
| 26 | 3886876 |
| 27 | 7322523 |
| 28 | 13793363 |
| 29 | 25984580 |
| 30 | 48948062 |
| 31 | 92209073 |
| 32 | 173699564 |
| 33 | 327214934 |
| 34 | 616397498 |
| 35 | 1161163428 |
| 36 | 2187371054 |
[1,0,2,1,4,6,13,23,44,82,154,292,547,1036,1943, 3672,6900,13022,24498,46194,86958,163892,308624, 581532,1095275,2063534,3886876,7322523,13793363, 25984580,48948062,92209073,173699564,327214934, 616397498,1161163428,2187371054] |