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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 10 |
| 7 | 21 |
| 8 | 43 |
| 9 | 86 |
| 10 | 130 |
| 11 | 282 |
| 12 | 575 |
| 13 | 1154 |
| 14 | 2311 |
| 15 | 4623 |
| 16 | 9247 |
| 17 | 18494 |
| 18 | 27742 |
| 19 | 60108 |
| 20 | 122528 |
| 21 | 246213 |
| 22 | 493005 |
| 23 | 986303 |
| 24 | 1972758 |
| 25 | 3945560 |
| 26 | 7891163 |
| 27 | 15782348 |
| 28 | 31564707 |
| 29 | 63129418 |
| 30 | 126258839 |
| 31 | 252517679 |
| 32 | 505035359 |
| 33 | 1010070718 |
| 34 | 1515106078 |
| 35 | 3282729836 |
| 36 | 6691718512 |
| 37 | 13446566445 |
[1,1,2,3,6,10,21,43,86,130,282,575,1154,2311,4623, 9247,18494,27742,60108,122528,246213,493005, 986303,1972758,3945560,7891163,15782348,31564707, 63129418,126258839,252517679,505035359,1010070718, 1515106078,3282729836,6691718512,13446566445] |