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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 30 |
| 6 | 56 |
| 7 | 104 |
| 8 | 196 |
| 9 | 371 |
| 10 | 706 |
| 11 | 1346 |
| 12 | 2572 |
| 13 | 4924 |
| 14 | 9448 |
| 15 | 18164 |
| 16 | 34988 |
| 17 | 67513 |
| 18 | 130489 |
| 19 | 252602 |
| 20 | 489713 |
| 21 | 950715 |
| 22 | 1848118 |
| 23 | 3597045 |
| 24 | 7009178 |
| 25 | 13672989 |
| 26 | 26699716 |
| 27 | 52187892 |
| 28 | 102100446 |
| 29 | 199920138 |
| 30 | 391772708 |
| 31 | 768315668 |
| 32 | 1507834048 |
| 33 | 2961130115 |
[1,2,4,8,16,30,56,104,196,371,706,1346,2572,4924, 9448,18164,34988,67513,130489,252602,489713, 950715,1848118,3597045,7009178,13672989,26699716, 52187892,102100446,199920138,391772708,768315668, 1507834048,2961130115] |