Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 9 |
5 | 29 |
6 | 90 |
7 | 284 |
8 | 890 |
9 | 2797 |
10 | 8780 |
11 | 27574 |
12 | 86581 |
13 | 271881 |
14 | 853732 |
15 | 2680833 |
16 | 8418132 |
17 | 26433983 |
18 | 83005929 |
19 | 260648825 |
20 | 818469251 |
21 | 2570093890 |
22 | 8070410030 |
23 | 25342077544 |
24 | 79577232067 |
25 | 249882270390 |
26 | 784660981474 |
27 | 2463931734897 |
[0,1,3,9,29,90,284,890,2797,8780,27574,86581, 271881,853732,2680833,8418132,26433983,83005929, 260648825,818469251,2570093890,8070410030, 25342077544,79577232067,249882270390,784660981474, 2463931734897] |