n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 61 |
4 | 147 |
5 | 1215 |
6 | 5826 |
7 | 28021 |
8 | 110420 |
9 | 527295 |
10 | 2326284 |
11 | 9514894 |
12 | 38982570 |
13 | 165423942 |
14 | 702887228 |
15 | 2961470604 |
16 | 11652281882 |
17 | 46921585497 |
18 | 193805455945 |
[0,2,61,147,1215,5826,28021,110420,527295,2326284, 9514894,38982570,165423942,702887228,2961470604, 11652281882,46921585497,193805455945] |