Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | 4 |
4 | 8 |
5 | 28 |
6 | 65 |
7 | 170 |
8 | 456 |
9 | 1177 |
10 | 3068 |
11 | 8016 |
12 | 21028 |
13 | 54696 |
14 | 142908 |
15 | 374527 |
16 | 976022 |
17 | 2551162 |
18 | 6674999 |
19 | 17422250 |
20 | 45536000 |
21 | 119053392 |
22 | 310969076 |
23 | 812695944 |
24 | 2124175469 |
25 | 5550025712 |
26 | 14503987368 |
27 | 37905500955 |
28 | 99050326532 |
29 | 258846292750 |
30 | 676453686574 |
[1,0,2,4,8,28,65,170,456,1177,3068,8016,21028, 54696,142908,374527,976022,2551162,6674999, 17422250,45536000,119053392,310969076,812695944, 2124175469,5550025712,14503987368,37905500955, 99050326532,258846292750,676453686574] |