n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 7 |
3 | 37 |
4 | 175 |
5 | 781 |
6 | 3367 |
7 | 14197 |
8 | 58975 |
9 | 242461 |
10 | 989527 |
11 | 4017157 |
12 | 16245775 |
13 | 65514541 |
14 | 263652487 |
15 | 1059392917 |
16 | 4251920575 |
17 | 17050729021 |
18 | 68332056247 |
19 | 273715645477 |
20 | 1096024843375 |
21 | 4387586157901 |
22 | 17560804984807 |
23 | 70274600998837 |
24 | 281192547174175 |
25 | 1125052618233181 |
[0,1,7,37,175,781,3367,14197,58975,242461,989527, 4017157,16245775,65514541,263652487,1059392917, 4251920575,17050729021,68332056247,273715645477, 1096024843375,4387586157901,17560804984807, 70274600998837,281192547174175,1125052618233181] |