Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 13 |
4 | 42 |
5 | 132 |
6 | 428 |
7 | 1393 |
8 | 4561 |
9 | 15032 |
10 | 49889 |
11 | 166542 |
12 | 558744 |
13 | 1883028 |
14 | 6370957 |
15 | 21628455 |
16 | 73641852 |
17 | 251385571 |
18 | 860067894 |
19 | 2948380732 |
20 | 10124956970 |
21 | 34823894885 |
22 | 119940097035 |
23 | 413612099138 |
24 | 1427945022753 |
25 | 4934850614704 |
[1,4,13,42,132,428,1393,4561,15032,49889,166542, 558744,1883028,6370957,21628455,73641852, 251385571,860067894,2948380732,10124956970, 34823894885,119940097035,413612099138, 1427945022753,4934850614704] |