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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 16 |
| 5 | 35 |
| 6 | 66 |
| 7 | 121 |
| 8 | 203 |
| 9 | 333 |
| 10 | 550 |
| 11 | 902 |
| 12 | 1473 |
| 13 | 2401 |
| 14 | 3896 |
| 15 | 6330 |
| 16 | 10264 |
| 17 | 16619 |
| 18 | 26919 |
| 19 | 43588 |
| 20 | 70562 |
| 21 | 114198 |
| 22 | 184804 |
| 23 | 299051 |
| 24 | 483906 |
| 25 | 783013 |
| 26 | 1266971 |
| 27 | 2050038 |
| 28 | 3317059 |
| 29 | 5367143 |
| 30 | 8684259 |
| 31 | 14051473 |
| 32 | 22735799 |
| 33 | 36787341 |
| 34 | 59523223 |
| 35 | 96310634 |
| 36 | 155833920 |
| 37 | 252144622 |
[0,1,2,6,16,35,66,121,203,333,550,902,1473,2401, 3896,6330,10264,16619,26919,43588,70562,114198, 184804,299051,483906,783013,1266971,2050038, 3317059,5367143,8684259,14051473,22735799, 36787341,59523223,96310634,155833920,252144622] |