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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 5 |
| 7 | 9 |
| 8 | 13 |
| 9 | 23 |
| 10 | 36 |
| 11 | 63 |
| 12 | 101 |
| 13 | 175 |
| 14 | 290 |
| 15 | 497 |
| 16 | 840 |
| 17 | 1445 |
| 18 | 2460 |
| 19 | 4247 |
| 20 | 7293 |
| 21 | 12619 |
| 22 | 21805 |
| 23 | 37856 |
| 24 | 65695 |
| 25 | 114401 |
| 26 | 199280 |
| 27 | 347944 |
| 28 | 607959 |
| 29 | 1064130 |
| 30 | 1864083 |
| 31 | 3269948 |
| 32 | 5740840 |
| 33 | 10090148 |
| 34 | 17748870 |
| 35 | 31250297 |
| 36 | 55063603 |
| 37 | 97102485 |
| 38 | 171355485 |
| 39 | 302605780 |
| 40 | 534729160 |
| 41 | 945513850 |
[1,1,1,2,4,5,9,13,23,36,63,101,175,290,497,840, 1445,2460,4247,7293,12619,21805,37856,65695, 114401,199280,347944,607959,1064130,1864083, 3269948,5740840,10090148,17748870,31250297, 55063603,97102485,171355485,302605780,534729160, 945513850] |