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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 15 |
| 7 | 22 |
| 8 | 34 |
| 9 | 57 |
| 10 | 101 |
| 11 | 181 |
| 12 | 319 |
| 13 | 549 |
| 14 | 928 |
| 15 | 1557 |
| 16 | 2617 |
| 17 | 4427 |
| 18 | 7536 |
| 19 | 12872 |
| 20 | 21992 |
| 21 | 37513 |
| 22 | 63862 |
| 23 | 108575 |
| 24 | 184524 |
| 25 | 313701 |
| 26 | 533619 |
| 27 | 908140 |
| 28 | 1545839 |
| 29 | 2631240 |
| 30 | 4478044 |
| 31 | 7619870 |
| 32 | 12964858 |
| 33 | 22058847 |
| 34 | 37533077 |
| 35 | 63865592 |
| 36 | 108676262 |
| 37 | 184929945 |
| 38 | 314685488 |
[0,0,1,3,6,10,15,22,34,57,101,181,319,549,928, 1557,2617,4427,7536,12872,21992,37513,63862, 108575,184524,313701,533619,908140,1545839, 2631240,4478044,7619870,12964858,22058847, 37533077,63865592,108676262,184929945,314685488] |