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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 5 |
| 5 | 6 |
| 6 | 17 |
| 7 | 30 |
| 8 | 65 |
| 9 | 131 |
| 10 | 257 |
| 11 | 536 |
| 12 | 1033 |
| 13 | 2132 |
| 14 | 4187 |
| 15 | 8370 |
| 16 | 16656 |
| 17 | 33123 |
| 18 | 65855 |
| 19 | 130460 |
| 20 | 259431 |
| 21 | 513737 |
| 22 | 1019223 |
| 23 | 2019783 |
| 24 | 4003071 |
| 25 | 7930375 |
| 26 | 15712418 |
| 27 | 31126184 |
| 28 | 61654062 |
| 29 | 122137206 |
| 30 | 241920724 |
| 31 | 479226157 |
| 32 | 949313939 |
| 33 | 1880589368 |
| 34 | 3725662783 |
[0,0,1,1,5,6,17,30,65,131,257,536,1033,2132,4187, 8370,16656,33123,65855,130460,259431,513737, 1019223,2019783,4003071,7930375,15712418,31126184, 61654062,122137206,241920724,479226157,949313939, 1880589368,3725662783] |