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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 12 |
| 5 | 26 |
| 6 | 52 |
| 7 | 92 |
| 8 | 170 |
| 9 | 310 |
| 10 | 541 |
| 11 | 945 |
| 12 | 1636 |
| 13 | 2760 |
| 14 | 4639 |
| 15 | 7743 |
| 16 | 12725 |
| 17 | 20795 |
| 18 | 33730 |
| 19 | 54184 |
| 20 | 86547 |
| 21 | 137351 |
| 22 | 216387 |
| 23 | 339069 |
| 24 | 528394 |
| 25 | 818664 |
| 26 | 1262245 |
| 27 | 1936835 |
| 28 | 2957432 |
| 29 | 4496330 |
| 30 | 6807191 |
| 31 | 10262275 |
| 32 | 15411203 |
| 33 | 23056461 |
| 34 | 34366753 |
| 35 | 51047199 |
| 36 | 75567600 |
[1,1,3,7,12,26,52,92,170,310,541,945,1636,2760, 4639,7743,12725,20795,33730,54184,86547,137351, 216387,339069,528394,818664,1262245,1936835, 2957432,4496330,6807191,10262275,15411203, 23056461,34366753,51047199,75567600] |