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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 11 |
| 3 | 27 |
| 4 | 65 |
| 5 | 158 |
| 6 | 388 |
| 7 | 957 |
| 8 | 2362 |
| 9 | 5827 |
| 10 | 14369 |
| 11 | 35427 |
| 12 | 87344 |
| 13 | 215348 |
| 14 | 530953 |
| 15 | 1309104 |
| 16 | 3227695 |
| 17 | 7958119 |
| 18 | 19621313 |
| 19 | 48377742 |
| 20 | 119278760 |
| 21 | 294090269 |
| 22 | 725100502 |
| 23 | 1787786943 |
| 24 | 4407916069 |
| 25 | 10868031067 |
[1,4,11,27,65,158,388,957,2362,5827,14369,35427, 87344,215348,530953,1309104,3227695,7958119, 19621313,48377742,119278760,294090269,725100502, 1787786943,4407916069,10868031067] |