n | a(n) |
---|---|
0 | 0 |
1 | 3 |
2 | 23 |
3 | 131 |
4 | 664 |
5 | 3166 |
6 | 14545 |
7 | 65187 |
8 | 287060 |
9 | 1247690 |
10 | 5368670 |
11 | 22917198 |
12 | 97195968 |
13 | 410030812 |
14 | 1722027973 |
15 | 7204620067 |
16 | 30044212828 |
17 | 124932768082 |
18 | 518215690018 |
19 | 2144815618522 |
20 | 8859729437488 |
21 | 36533517261412 |
22 | 150410878895818 |
23 | 618371102344846 |
24 | 2538971850705064 |
25 | 10412490129563556 |
[0,3,23,131,664,3166,14545,65187,287060,1247690, 5368670,22917198,97195968,410030812,1722027973, 7204620067,30044212828,124932768082,518215690018, 2144815618522,8859729437488,36533517261412, 150410878895818,618371102344846,2538971850705064, 10412490129563556] |