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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 61 |
| 3 | 301 |
| 4 | 353 |
| 5 | 1307 |
| 6 | 4505 |
| 7 | 16265 |
| 8 | 46773 |
| 9 | 136935 |
| 10 | 481479 |
| 11 | 1631059 |
| 12 | 5055540 |
| 13 | 16067446 |
| 14 | 52668892 |
| 15 | 175365361 |
| 16 | 562163896 |
| 17 | 1807393316 |
| 18 | 5893267465 |
| 19 | 19311336692 |
| 20 | 62623833763 |
| 21 | 202770902304 |
| 22 | 659588139794 |
| 23 | 2152022230238 |
| 24 | 6997053941406 |
[0,61,301,353,1307,4505,16265,46773,136935,481479, 1631059,5055540,16067446,52668892,175365361, 562163896,1807393316,5893267465,19311336692, 62623833763,202770902304,659588139794, 2152022230238,6997053941406] |