Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 8 |
5 | 24 |
6 | 74 |
7 | 238 |
8 | 786 |
9 | 2646 |
10 | 9071 |
11 | 31536 |
12 | 110967 |
13 | 394420 |
14 | 1414053 |
15 | 5107523 |
16 | 18568628 |
17 | 67894564 |
18 | 249513890 |
19 | 921134164 |
20 | 3414439996 |
21 | 12703212213 |
22 | 47419589969 |
23 | 177551521838 |
24 | 666655929561 |
25 | 2509526456940 |
26 | 9469082269965 |
27 | 35807434636137 |
28 | 135681047696427 |
[1,1,1,3,8,24,74,238,786,2646,9071,31536,110967, 394420,1414053,5107523,18568628,67894564, 249513890,921134164,3414439996,12703212213, 47419589969,177551521838,666655929561, 2509526456940,9469082269965,35807434636137, 135681047696427] |