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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 8 |
| 3 | 18 |
| 4 | 40 |
| 5 | 84 |
| 6 | 162 |
| 7 | 321 |
| 8 | 649 |
| 9 | 1286 |
| 10 | 2550 |
| 11 | 5096 |
| 12 | 10188 |
| 13 | 20406 |
| 14 | 40883 |
| 15 | 81932 |
| 16 | 164190 |
| 17 | 328490 |
| 18 | 657509 |
| 19 | 1316258 |
| 20 | 2635513 |
| 21 | 5276876 |
| 22 | 10565366 |
| 23 | 21155215 |
| 24 | 42355195 |
| 25 | 84797387 |
| 26 | 169759097 |
[2,8,18,40,84,162,321,649,1286,2550,5096,10188, 20406,40883,81932,164190,328490,657509,1316258, 2635513,5276876,10565366,21155215,42355195, 84797387,169759097] |