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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 8 |
| 7 | 16 |
| 8 | 24 |
| 9 | 42 |
| 10 | 69 |
| 11 | 124 |
| 12 | 208 |
| 13 | 378 |
| 14 | 668 |
| 15 | 1214 |
| 16 | 2220 |
| 17 | 4110 |
| 18 | 7630 |
| 19 | 14308 |
| 20 | 26931 |
| 21 | 50944 |
| 22 | 96782 |
| 23 | 184408 |
| 24 | 352450 |
| 25 | 675180 |
| 26 | 1296477 |
| 27 | 2493680 |
| 28 | 4805388 |
| 29 | 9272778 |
| 30 | 17919558 |
| 31 | 34669600 |
| 32 | 67156800 |
| 33 | 130215996 |
| 34 | 252741255 |
| 35 | 490984464 |
| 36 | 954629662 |
| 37 | 1857545298 |
[1,2,1,2,3,6,8,16,24,42,69,124,208,378,668,1214, 2220,4110,7630,14308,26931,50944,96782,184408, 352450,675180,1296477,2493680,4805388,9272778, 17919558,34669600,67156800,130215996,252741255, 490984464,954629662,1857545298] |