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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 20 |
| 7 | 38 |
| 8 | 79 |
| 9 | 162 |
| 10 | 348 |
| 11 | 751 |
| 12 | 1661 |
| 13 | 3695 |
| 14 | 8335 |
| 15 | 18919 |
| 16 | 43310 |
| 17 | 99664 |
| 18 | 230700 |
| 19 | 536327 |
| 20 | 1252298 |
| 21 | 2934508 |
| 22 | 6900046 |
| 23 | 16272771 |
| 24 | 38484608 |
| 25 | 91243851 |
| 26 | 216839820 |
| 27 | 516423974 |
| 28 | 1232376315 |
| 29 | 2946354649 |
| 30 | 7056335478 |
| 31 | 16926813939 |
| 32 | 40665822366 |
| 33 | 97836595223 |
| 34 | 235697108115 |
| 35 | 568531616730 |
[1,1,2,3,6,10,20,38,79,162,348,751,1661,3695,8335, 18919,43310,99664,230700,536327,1252298,2934508, 6900046,16272771,38484608,91243851,216839820, 516423974,1232376315,2946354649,7056335478, 16926813939,40665822366,97836595223,235697108115, 568531616730] |