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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 14 |
| 6 | 26 |
| 7 | 45 |
| 8 | 85 |
| 9 | 155 |
| 10 | 286 |
| 11 | 540 |
| 12 | 1047 |
| 13 | 2014 |
| 14 | 3939 |
| 15 | 7642 |
| 16 | 15082 |
| 17 | 29601 |
| 18 | 58797 |
| 19 | 116248 |
| 20 | 231530 |
| 21 | 459976 |
| 22 | 917030 |
| 23 | 1826669 |
| 24 | 3641525 |
| 25 | 7253511 |
| 26 | 14463688 |
| 27 | 28834305 |
| 28 | 57481793 |
| 29 | 114543879 |
| 30 | 228286471 |
[1,2,4,8,14,26,45,85,155,286,540,1047,2014,3939, 7642,15082,29601,58797,116248,231530,459976, 917030,1826669,3641525,7253511,14463688,28834305, 57481793,114543879,228286471] |