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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 12 |
| 4 | 26 |
| 5 | 50 |
| 6 | 110 |
| 7 | 192 |
| 8 | 416 |
| 9 | 816 |
| 10 | 1768 |
| 11 | 3084 |
| 12 | 6682 |
| 13 | 13106 |
| 14 | 28398 |
| 15 | 49152 |
| 16 | 106496 |
| 17 | 208896 |
| 18 | 452608 |
| 19 | 789504 |
| 20 | 1710592 |
| 21 | 3355392 |
| 22 | 7270016 |
| 23 | 12583104 |
| 24 | 27263392 |
| 25 | 53478192 |
| 26 | 115869416 |
| 27 | 202116108 |
| 28 | 437918234 |
| 29 | 858993458 |
| 30 | 1861152494 |
| 31 | 3221225472 |
| 32 | 6979321856 |
[1,3,6,12,26,50,110,192,416,816,1768,3084,6682, 13106,28398,49152,106496,208896,452608,789504, 1710592,3355392,7270016,12583104,27263392, 53478192,115869416,202116108,437918234,858993458, 1861152494,3221225472,6979321856] |