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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 6 |
| 7 | 47 |
| 8 | 300 |
| 9 | 1233 |
| 10 | 3337 |
| 11 | 7048 |
| 12 | 15214 |
| 13 | 43620 |
| 14 | 224133 |
| 15 | 1567797 |
| 16 | 10356991 |
| 17 | 58751450 |
| 18 | 281746346 |
| 19 | 1167238072 |
| 20 | 4352934719 |
| 21 | 15495243129 |
| 22 | 57125652937 |
| 23 | 236999679008 |
| 24 | 1129723081249 |
| 25 | 5822844270273 |
[1,0,0,0,1,6,47,300,1233,3337,7048,15214,43620, 224133,1567797,10356991,58751450,281746346, 1167238072,4352934719,15495243129,57125652937, 236999679008,1129723081249,5822844270273] |