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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 19 |
| 4 | 27 |
| 5 | 74 |
| 6 | 185 |
| 7 | 440 |
| 8 | 1015 |
| 9 | 2294 |
| 10 | 5109 |
| 11 | 10228 |
| 12 | 11252 |
| 13 | 24563 |
| 14 | 53234 |
| 15 | 114673 |
| 16 | 245744 |
| 17 | 524271 |
| 18 | 1114094 |
| 19 | 2359277 |
| 20 | 4980716 |
| 21 | 10485739 |
| 22 | 22020074 |
| 23 | 46137321 |
| 24 | 88080360 |
| 25 | 96468968 |
| 26 | 201326567 |
| 27 | 419430374 |
| 28 | 872415205 |
| 29 | 1811939300 |
| 30 | 15569256417 |
[1,8,19,27,74,185,440,1015,2294,5109,10228,11252, 24563,53234,114673,245744,524271,1114094,2359277, 4980716,10485739,22020074,46137321,88080360, 96468968,201326567,419430374,872415205,1811939300, 15569256417] |