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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 19 |
| 7 | 35 |
| 8 | 64 |
| 9 | 118 |
| 10 | 217 |
| 11 | 399 |
| 12 | 734 |
| 13 | 1350 |
| 14 | 2483 |
| 15 | 4567 |
| 16 | 8400 |
| 17 | 15450 |
| 18 | 28417 |
| 19 | 52267 |
| 20 | 96134 |
| 21 | 176818 |
| 22 | 325219 |
| 23 | 598171 |
| 24 | 1100208 |
| 25 | 2023598 |
| 26 | 3721977 |
| 27 | 6845783 |
| 28 | 12591358 |
| 29 | 23159118 |
| 30 | 42596259 |
| 31 | 78346735 |
| 32 | 144102112 |
| 33 | 265045106 |
| 34 | 487493953 |
| 35 | 896641171 |
| 36 | 1649180230 |
[0,2,1,3,6,10,19,35,64,118,217,399,734,1350,2483, 4567,8400,15450,28417,52267,96134,176818,325219, 598171,1100208,2023598,3721977,6845783,12591358, 23159118,42596259,78346735,144102112,265045106, 487493953,896641171,1649180230] |