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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 | 4 |
| 2 | 13 |
| 3 | 17 |
| 4 | 30 |
| 5 | 77 |
| 6 | 107 |
| 7 | 184 |
| 8 | 659 |
| 9 | 2820 |
| 10 | 96539 |
| 11 | 388976 |
| 12 | 1263467 |
| 13 | 1652443 |
| 14 | 2915910 |
| 15 | 7484263 |
| 16 | 10400173 |
| 17 | 17884436 |
| 18 | 64053481 |
| 19 | 274098360 |
| 20 | 9383397721 |
| 21 | 37807689244 |
| 22 | 122806465453 |
| 23 | 160614154697 |
| 24 | 283420620150 |
| 25 | 727455394997 |
| 26 | 1010876015147 |
| 27 | 1738331410144 |
[1,4,13,17,30,77,107,184,659,2820,96539,388976, 1263467,1652443,2915910,7484263,10400173,17884436, 64053481,274098360,9383397721,37807689244, 122806465453,160614154697,283420620150, 727455394997,1010876015147,1738331410144] |