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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 20 |
| 5 | 42 |
| 6 | 95 |
| 7 | 201 |
| 8 | 465 |
| 9 | 1014 |
| 10 | 2292 |
| 11 | 5014 |
| 12 | 11043 |
| 13 | 23594 |
| 14 | 49910 |
| 15 | 102699 |
| 16 | 207520 |
| 17 | 408597 |
| 18 | 788081 |
| 19 | 1484174 |
| 20 | 2738264 |
| 21 | 4944037 |
| 22 | 8755686 |
| 23 | 15208359 |
| 24 | 25952790 |
| 25 | 43527033 |
| 26 | 71841425 |
| 27 | 116752322 |
| 28 | 187018934 |
| 29 | 295451249 |
| 30 | 460722893 |
| 31 | 709561513 |
| 32 | 1080061323 |
[1,2,4,8,20,42,95,201,465,1014,2292,5014,11043, 23594,49910,102699,207520,408597,788081,1484174, 2738264,4944037,8755686,15208359,25952790, 43527033,71841425,116752322,187018934,295451249, 460722893,709561513,1080061323] |