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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 21 |
| 3 | 27 |
| 4 | 101 |
| 5 | 347 |
| 6 | 1129 |
| 7 | 4982 |
| 8 | 23181 |
| 9 | 101615 |
| 10 | 481454 |
| 11 | 2332962 |
| 12 | 11031069 |
| 13 | 52713092 |
| 14 | 254276678 |
| 15 | 1219410066 |
| 16 | 5849035794 |
| 17 | 28135957701 |
| 18 | 135212478429 |
| 19 | 649485620674 |
| 20 | 3121936522853 |
| 21 | 15005508174783 |
| 22 | 72108968570806 |
| 23 | 346566325528536 |
[5,21,27,101,347,1129,4982,23181,101615,481454, 2332962,11031069,52713092,254276678,1219410066, 5849035794,28135957701,135212478429,649485620674, 3121936522853,15005508174783,72108968570806, 346566325528536] |