n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 11 |
5 | 42 |
6 | 176 |
7 | 792 |
8 | 3718 |
9 | 17977 |
10 | 89134 |
11 | 451276 |
12 | 2323520 |
13 | 12132164 |
14 | 64112359 |
15 | 342325709 |
16 | 1844349560 |
17 | 10015581680 |
18 | 54770336324 |
19 | 301384802048 |
20 | 1667727404093 |
21 | 9275102575355 |
22 | 51820051838712 |
23 | 290726957916112 |
24 | 1637293969337171 |
25 | 9253082936723602 |
[1,1,3,11,42,176,792,3718,17977,89134,451276, 2323520,12132164,64112359,342325709,1844349560, 10015581680,54770336324,301384802048, 1667727404093,9275102575355,51820051838712, 290726957916112,1637293969337171,9253082936723602] |