n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 8 |
5 | 38 |
6 | 208 |
7 | 1348 |
8 | 10126 |
9 | 86174 |
10 | 819134 |
11 | 8604404 |
12 | 98981944 |
13 | 1237575268 |
14 | 16710431992 |
15 | 242337783032 |
16 | 3756693451772 |
17 | 61991635990652 |
18 | 1084943597643964 |
19 | 20072853005524696 |
20 | 391443701509660096 |
21 | 8024999955144721256 |
22 | 172544980412641191776 |
[1,1,1,2,8,38,208,1348,10126,86174,819134,8604404, 98981944,1237575268,16710431992,242337783032, 3756693451772,61991635990652,1084943597643964, 20072853005524696,391443701509660096, 8024999955144721256,172544980412641191776] |