Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 2 |
2 | 8 |
3 | 44 |
4 | 192 |
5 | 888 |
6 | 4104 |
7 | 18540 |
8 | 85752 |
9 | 389340 |
10 | 1787832 |
11 | 8158644 |
12 | 37336464 |
13 | 170669592 |
14 | 780379920 |
15 | 3568245048 |
16 | 16314092712 |
17 | 74594729628 |
18 | 341056001520 |
19 | 1559406670200 |
20 | 7129910871000 |
21 | 32599645712604 |
22 | 149052729608136 |
[2,8,44,192,888,4104,18540,85752,389340,1787832, 8158644,37336464,170669592,780379920,3568245048, 16314092712,74594729628,341056001520, 1559406670200,7129910871000,32599645712604, 149052729608136] |