n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 13 |
3 | 58 |
4 | 270 |
5 | 1280 |
6 | 6150 |
7 | 29805 |
8 | 145360 |
9 | 712206 |
10 | 3501803 |
11 | 17264747 |
12 | 85302729 |
13 | 422197260 |
14 | 2092558843 |
15 | 10383452493 |
16 | 51573082768 |
17 | 256362474771 |
18 | 1275210602985 |
19 | 6346900307554 |
20 | 31605149836728 |
21 | 157449319326981 |
22 | 784667701737738 |
23 | 3911759095866487 |
24 | 19506630908252765 |
25 | 97297440023869383 |
[1,3,13,58,270,1280,6150,29805,145360,712206, 3501803,17264747,85302729,422197260,2092558843, 10383452493,51573082768,256362474771, 1275210602985,6346900307554,31605149836728, 157449319326981,784667701737738,3911759095866487, 19506630908252765,97297440023869383] |