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| n | a(n) |
|---|---|
| 4 | 11 |
| 5 | 25 |
| 6 | 54 |
| 7 | 114 |
| 8 | 237 |
| 9 | 486 |
| 10 | 988 |
| 11 | 1998 |
| 12 | 4027 |
| 13 | 8097 |
| 14 | 16253 |
| 15 | 32587 |
| 16 | 65286 |
| 17 | 130727 |
| 18 | 261668 |
| 19 | 523631 |
| 20 | 1047669 |
| 21 | 2095900 |
| 22 | 4192576 |
| 23 | 8386223 |
| 24 | 16773924 |
| 25 | 33549888 |
| 26 | 67102592 |
| 27 | 134209071 |
| 28 | 268423507 |
| 29 | 536854419 |
| 30 | 1073719059 |
| 31 | 2147452226 |
[11,25,54,114,237,486,988,1998,4027,8097,16253, 32587,65286,130727,261668,523631,1047669,2095900, 4192576,8386223,16773924,33549888,67102592, 134209071,268423507,536854419,1073719059, 2147452226] |