Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 25 |
6 | 85 |
7 | 346 |
8 | 1589 |
9 | 7846 |
10 | 40567 |
11 | 216327 |
12 | 1180227 |
13 | 6554627 |
14 | 36939883 |
15 | 210777514 |
16 | 1215644593 |
17 | 7077255068 |
18 | 41546269583 |
19 | 245708229893 |
20 | 1462853468378 |
21 | 8761861115930 |
22 | 52767463557770 |
[1,2,4,9,25,85,346,1589,7846,40567,216327,1180227, 6554627,36939883,210777514,1215644593,7077255068, 41546269583,245708229893,1462853468378, 8761861115930,52767463557770] |