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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 | 2 |
| 2 | 5 |
| 3 | 17 |
| 4 | 55 |
| 5 | 200 |
| 6 | 747 |
| 7 | 2886 |
| 8 | 11407 |
| 9 | 46180 |
| 10 | 188759 |
| 11 | 784953 |
| 12 | 3291063 |
| 13 | 13948318 |
| 14 | 59537085 |
| 15 | 256217269 |
| 16 | 1108406473 |
| 17 | 4826799850 |
| 18 | 21108279413 |
| 19 | 92791015661 |
| 20 | 409373685603 |
| 21 | 1813752099410 |
| 22 | 8060179508049 |
| 23 | 35947168744298 |
| 24 | 160730764771703 |
| 25 | 720860104401638 |
| 26 | 3240196703246163 |
| 27 | 14602369618879735 |
[1,2,5,17,55,200,747,2886,11407,46180,188759, 784953,3291063,13948318,59537085,256217269, 1108406473,4826799850,21108279413,92791015661, 409373685603,1813752099410,8060179508049, 35947168744298,160730764771703,720860104401638, 3240196703246163,14602369618879735] |