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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 208 |
| 2 | 676 |
| 3 | 2444 |
| 4 | 8836 |
| 5 | 31960 |
| 6 | 115600 |
| 7 | 418200 |
| 8 | 1512900 |
| 9 | 5473500 |
| 10 | 19802500 |
| 11 | 71645000 |
| 12 | 259210000 |
| 13 | 937825000 |
| 14 | 3393062500 |
| 15 | 12276187500 |
| 16 | 44415562500 |
| 17 | 160696875000 |
| 18 | 581406250000 |
| 19 | 2103546875000 |
| 20 | 7610701562500 |
| 21 | 27535773437500 |
| 22 | 99625351562500 |
[208,676,2444,8836,31960,115600,418200,1512900, 5473500,19802500,71645000,259210000,937825000, 3393062500,12276187500,44415562500,160696875000, 581406250000,2103546875000,7610701562500, 27535773437500,99625351562500] |