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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 7 |
| 7 | 14 |
| 8 | 36 |
| 9 | 93 |
| 10 | 220 |
| 11 | 474 |
| 12 | 948 |
| 13 | 1807 |
| 14 | 3381 |
| 15 | 6385 |
| 16 | 12393 |
| 17 | 24786 |
| 18 | 50559 |
| 19 | 103702 |
| 20 | 211585 |
| 21 | 427351 |
| 22 | 854702 |
| 23 | 1698458 |
| 24 | 3368259 |
| 25 | 6690150 |
| 26 | 13333932 |
| 27 | 26667864 |
| 28 | 53457121 |
| 29 | 107232053 |
| 30 | 214978335 |
| 31 | 430470899 |
| 32 | 860941798 |
| 33 | 1720537327 |
| 34 | 3437550076 |
| 35 | 6869397265 |
[0,1,2,3,4,5,7,14,36,93,220,474,948,1807,3381, 6385,12393,24786,50559,103702,211585,427351, 854702,1698458,3368259,6690150,13333932,26667864, 53457121,107232053,214978335,430470899,860941798, 1720537327,3437550076,6869397265] |