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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 4 |
| 3 | 5 |
| 4 | 10 |
| 5 | 27 |
| 6 | 68 |
| 7 | 173 |
| 8 | 450 |
| 9 | 1179 |
| 10 | 3084 |
| 11 | 8069 |
| 12 | 21122 |
| 13 | 55299 |
| 14 | 144772 |
| 15 | 379013 |
| 16 | 992266 |
| 17 | 2597787 |
| 18 | 6801092 |
| 19 | 17805485 |
| 20 | 46615362 |
| 21 | 122040603 |
| 22 | 319506444 |
| 23 | 836478725 |
| 24 | 2189929730 |
| 25 | 5733310467 |
| 26 | 15010001668 |
| 27 | 39296694533 |
| 28 | 102880081930 |
[2,3,4,5,10,27,68,173,450,1179,3084,8069,21122, 55299,144772,379013,992266,2597787,6801092, 17805485,46615362,122040603,319506444,836478725, 2189929730,5733310467,15010001668,39296694533, 102880081930] |