n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 18 |
4 | 63 |
5 | 218 |
6 | 891 |
7 | 3676 |
8 | 15137 |
9 | 60580 |
10 | 238672 |
11 | 953501 |
12 | 3826167 |
13 | 15308186 |
14 | 61204878 |
15 | 244709252 |
16 | 979285522 |
17 | 3917052950 |
18 | 15664274802 |
19 | 62663847447 |
20 | 250662444349 |
21 | 1002632090376 |
22 | 4010544455838 |
23 | 16042042419476 |
24 | 64168305037147 |
25 | 256675237863576 |
[1,5,18,63,218,891,3676,15137,60580,238672,953501, 3826167,15308186,61204878,244709252,979285522, 3917052950,15664274802,62663847447,250662444349, 1002632090376,4010544455838,16042042419476, 64168305037147,256675237863576] |