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| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 2 |
| 2 | 6 |
| 3 | 17 |
| 4 | 42 |
| 5 | 107 |
| 6 | 273 |
| 7 | 695 |
| 8 | 1770 |
| 9 | 4508 |
| 10 | 11481 |
| 11 | 29240 |
| 12 | 74469 |
| 13 | 189659 |
| 14 | 483027 |
| 15 | 1230182 |
| 16 | 3133050 |
| 17 | 7979309 |
| 18 | 20321850 |
| 19 | 51756059 |
| 20 | 131813277 |
| 21 | 335704463 |
| 22 | 854978262 |
| 23 | 2177474264 |
| 24 | 5545631253 |
| 25 | 14123715032 |
| 26 | 35970535581 |
| 27 | 91610417447 |
| 28 | 233315085507 |
| 29 | 594211124042 |
| 30 | 1513347751038 |
| 31 | 3854221711625 |
| 32 | 9816002298330 |
[3,2,6,17,42,107,273,695,1770,4508,11481,29240, 74469,189659,483027,1230182,3133050,7979309, 20321850,51756059,131813277,335704463,854978262, 2177474264,5545631253,14123715032,35970535581, 91610417447,233315085507,594211124042, 1513347751038,3854221711625,9816002298330] |