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| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 1 |
| 2 | 5 |
| 3 | 4 |
| 4 | 13 |
| 5 | 16 |
| 6 | 38 |
| 7 | 57 |
| 8 | 117 |
| 9 | 193 |
| 10 | 370 |
| 11 | 639 |
| 12 | 1186 |
| 13 | 2094 |
| 14 | 3827 |
| 15 | 6829 |
| 16 | 12389 |
| 17 | 22220 |
| 18 | 40169 |
| 19 | 72220 |
| 20 | 130338 |
| 21 | 234609 |
| 22 | 423065 |
| 23 | 761945 |
| 24 | 1373466 |
| 25 | 2474291 |
| 26 | 4459278 |
| 27 | 8034394 |
| 28 | 14478659 |
| 29 | 26088169 |
| 30 | 47011093 |
| 31 | 84708772 |
| 32 | 152642789 |
| 33 | 275049240 |
[3,1,5,4,13,16,38,57,117,193,370,639,1186,2094, 3827,6829,12389,22220,40169,72220,130338,234609, 423065,761945,1373466,2474291,4459278,8034394, 14478659,26088169,47011093,84708772,152642789, 275049240] |