Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 17 |
3 | 81 |
4 | 547 |
5 | 2571 |
6 | 13397 |
7 | 78101 |
8 | 423957 |
9 | 2255611 |
10 | 12173719 |
11 | 66864485 |
12 | 361733507 |
13 | 1953439221 |
14 | 10607016995 |
15 | 57610139877 |
16 | 312099473393 |
17 | 1691511381425 |
18 | 9176876436943 |
19 | 49767044309153 |
20 | 269799849310117 |
21 | 1462993236129599 |
[1,17,81,547,2571,13397,78101,423957,2255611, 12173719,66864485,361733507,1953439221, 10607016995,57610139877,312099473393, 1691511381425,9176876436943,49767044309153, 269799849310117,1462993236129599] |