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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 28 |
| 3 | 85 |
| 4 | 218 |
| 5 | 499 |
| 6 | 1053 |
| 7 | 2092 |
| 8 | 3970 |
| 9 | 7272 |
| 10 | 12958 |
| 11 | 22596 |
| 12 | 38739 |
| 13 | 65535 |
| 14 | 109714 |
| 15 | 182185 |
| 16 | 300620 |
| 17 | 493635 |
| 18 | 807555 |
| 19 | 1317360 |
| 20 | 2144396 |
| 21 | 3485032 |
| 22 | 5657028 |
| 23 | 9174560 |
| 24 | 14869613 |
| 25 | 24088399 |
| 26 | 39009168 |
| 27 | 63156437 |
| 28 | 102233030 |
| 29 | 165466347 |
| 30 | 267786673 |
[1,7,28,85,218,499,1053,2092,3970,7272,12958, 22596,38739,65535,109714,182185,300620,493635, 807555,1317360,2144396,3485032,5657028,9174560, 14869613,24088399,39009168,63156437,102233030, 165466347,267786673] |