| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 24 |
| 3 | 56 |
| 4 | 120 |
| 5 | 248 |
| 6 | 504 |
| 7 | 1016 |
| 8 | 2040 |
| 9 | 4088 |
| 10 | 8184 |
| 11 | 16376 |
| 12 | 32760 |
| 13 | 65528 |
| 14 | 131064 |
| 15 | 262136 |
| 16 | 524280 |
| 17 | 1048568 |
| 18 | 2097144 |
| 19 | 4194296 |
| 20 | 8388600 |
| 21 | 16777208 |
| 22 | 33554424 |
| 23 | 67108856 |
| 24 | 134217720 |
| 25 | 268435448 |
| 26 | 536870904 |
| 27 | 1073741816 |
| 28 | 2147483640 |
[8,24,56,120,248,504,1016,2040,4088,8184,16376, 32760,65528,131064,262136,524280,1048568,2097144, 4194296,8388600,16777208,33554424,67108856, 134217720,268435448,536870904,1073741816, 2147483640] |