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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 6 |
| 5 | 15 |
| 6 | 19 |
| 7 | 46 |
| 8 | 59 |
| 9 | 140 |
| 10 | 177 |
| 11 | 420 |
| 12 | 532 |
| 13 | 1261 |
| 14 | 1598 |
| 15 | 3785 |
| 16 | 4794 |
| 17 | 11355 |
| 18 | 14383 |
| 19 | 34066 |
| 20 | 43151 |
| 21 | 102200 |
| 22 | 129453 |
| 23 | 306600 |
| 24 | 388360 |
| 25 | 919801 |
| 26 | 1165082 |
| 27 | 2759405 |
| 28 | 3495246 |
| 29 | 8278215 |
| 30 | 10485739 |
| 31 | 24834646 |
| 32 | 31457219 |
| 33 | 74503940 |
| 34 | 94371657 |
[0,1,2,5,6,15,19,46,59,140,177,420,532,1261,1598, 3785,4794,11355,14383,34066,43151,102200,129453, 306600,388360,919801,1165082,2759405,3495246, 8278215,10485739,24834646,31457219,74503940, 94371657] |