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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 21 |
| 3 | 27 |
| 4 | 101 |
| 5 | 333 |
| 6 | 1023 |
| 7 | 4370 |
| 8 | 19555 |
| 9 | 81921 |
| 10 | 373236 |
| 11 | 1746093 |
| 12 | 7958693 |
| 13 | 36661588 |
| 14 | 170702565 |
| 15 | 790337639 |
| 16 | 3658576294 |
| 17 | 16987088609 |
| 18 | 78814582035 |
| 19 | 365464383814 |
| 20 | 1695764465465 |
| 21 | 7868567868165 |
| 22 | 36503556231992 |
| 23 | 169363215538143 |
[5,21,27,101,333,1023,4370,19555,81921,373236, 1746093,7958693,36661588,170702565,790337639, 3658576294,16987088609,78814582035,365464383814, 1695764465465,7868567868165,36503556231992, 169363215538143] |