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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 7 |
| 7 | 11 |
| 8 | 15 |
| 9 | 22 |
| 10 | 30 |
| 11 | 55 |
| 12 | 788 |
| 13 | 5747 |
| 14 | 28915 |
| 15 | 114064 |
| 16 | 378823 |
| 17 | 1105429 |
| 18 | 2916219 |
| 19 | 7093435 |
| 20 | 8275126 |
| 21 | 17341313 |
| 22 | 34721974 |
| 23 | 66837990 |
| 24 | 124308827 |
| 25 | 224290376 |
| 26 | 393929311 |
| 27 | 675393430 |
| 28 | 1133103539 |
| 29 | 1864009161 |
| 30 | 3157186031 |
| 31 | 5011108578 |
| 32 | 7836124010 |
| 33 | 12086660443 |
[1,1,2,3,5,7,11,15,22,30,55,788,5747,28915,114064, 378823,1105429,2916219,7093435,8275126,17341313, 34721974,66837990,124308827,224290376,393929311, 675393430,1133103539,1864009161,3157186031, 5011108578,7836124010,12086660443] |