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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 8 |
| 6 | 14 |
| 7 | 31 |
| 8 | 63 |
| 9 | 129 |
| 10 | 248 |
| 11 | 509 |
| 12 | 1011 |
| 13 | 2044 |
| 14 | 4089 |
| 15 | 8167 |
| 16 | 16360 |
| 17 | 32725 |
| 18 | 65482 |
| 19 | 131017 |
| 20 | 262176 |
| 21 | 524167 |
| 22 | 1048678 |
| 23 | 2096985 |
| 24 | 4194358 |
| 25 | 8387802 |
| 26 | 16776408 |
| 27 | 33550943 |
| 28 | 67101615 |
| 29 | 134199983 |
| 30 | 268399122 |
| 31 | 536793004 |
| 32 | 1073590077 |
| 33 | 2147187353 |
| 34 | 4294419287 |
| 35 | 8588940438 |
[0,1,1,4,8,14,31,63,129,248,509,1011,2044,4089, 8167,16360,32725,65482,131017,262176,524167, 1048678,2096985,4194358,8387802,16776408,33550943, 67101615,134199983,268399122,536793004,1073590077, 2147187353,4294419287,8588940438] |