n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 12 |
4 | 52 |
5 | 238 |
6 | 1125 |
7 | 5438 |
8 | 26715 |
9 | 132871 |
10 | 667312 |
11 | 3377906 |
12 | 17210522 |
13 | 88169685 |
14 | 453810095 |
15 | 2345209383 |
16 | 12162367228 |
17 | 63270384303 |
[1,3,12,52,238,1125,5438,26715,132871,667312, 3377906,17210522,88169685,453810095,2345209383, 12162367228,63270384303] |