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| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 4 |
| 8 | 10 |
| 9 | 21 |
| 10 | 39 |
| 11 | 70 |
| 12 | 125 |
| 13 | 229 |
| 14 | 435 |
| 15 | 859 |
| 16 | 1739 |
| 17 | 3574 |
| 18 | 7384 |
| 19 | 15239 |
| 20 | 31312 |
| 21 | 63968 |
| 22 | 129898 |
| 23 | 262316 |
| 24 | 527169 |
| 25 | 1055254 |
| 26 | 2105849 |
| 27 | 4192933 |
| 28 | 8335832 |
| 29 | 16557580 |
| 30 | 32877010 |
| 31 | 65286137 |
| 32 | 129695835 |
| 33 | 257817166 |
| 34 | 512918318 |
| 35 | 1021351641 |
| 36 | 2035674817 |
| 37 | 4061093104 |
| 38 | 8108844651 |
[1,0,0,1,4,10,21,39,70,125,229,435,859,1739,3574, 7384,15239,31312,63968,129898,262316,527169, 1055254,2105849,4192933,8335832,16557580,32877010, 65286137,129695835,257817166,512918318,1021351641, 2035674817,4061093104,8108844651] |