n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 8 |
3 | 23 |
4 | 63 |
5 | 167 |
6 | 440 |
7 | 1154 |
8 | 3024 |
9 | 7919 |
10 | 20735 |
11 | 54287 |
12 | 142128 |
13 | 372098 |
14 | 974168 |
15 | 2550407 |
16 | 6677055 |
17 | 17480759 |
18 | 45765224 |
19 | 119814914 |
20 | 313679520 |
21 | 821223647 |
22 | 2149991423 |
23 | 5628750623 |
24 | 14736260448 |
25 | 38580030722 |
26 | 101003831720 |
[0,2,8,23,63,167,440,1154,3024,7919,20735,54287, 142128,372098,974168,2550407,6677055,17480759, 45765224,119814914,313679520,821223647,2149991423, 5628750623,14736260448,38580030722,101003831720] |