Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 2 |
6 | 2 |
7 | 6 |
8 | 30 |
9 | 69 |
10 | 230 |
11 | 662 |
12 | 2244 |
13 | 6197 |
14 | 20782 |
15 | 57963 |
16 | 185236 |
17 | 534294 |
18 | 1636436 |
19 | 4788888 |
20 | 14148505 |
21 | 41505698 |
22 | 119551191 |
23 | 347802192 |
24 | 984873101 |
25 | 2823972122 |
26 | 7899999963 |
27 | 22281193586 |
28 | 61710573450 |
29 | 171287868395 |
30 | 469925476292 |
[1,1,1,1,2,2,6,30,69,230,662,2244,6197,20782, 57963,185236,534294,1636436,4788888,14148505, 41505698,119551191,347802192,984873101,2823972122, 7899999963,22281193586,61710573450,171287868395, 469925476292] |