n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 3 |
3 | 14 |
4 | 50 |
5 | 181 |
6 | 657 |
7 | 2383 |
8 | 8644 |
9 | 31355 |
10 | 113736 |
11 | 412562 |
12 | 1496513 |
13 | 5428399 |
14 | 19690785 |
15 | 71425666 |
16 | 259086967 |
17 | 939803018 |
18 | 3409008654 |
19 | 12365718965 |
20 | 44854977221 |
21 | 162705378247 |
22 | 590191808148 |
23 | 2140841158159 |
24 | 7765612469020 |
25 | 28168711531526 |
26 | 102178200690777 |
[1,2,3,14,50,181,657,2383,8644,31355,113736, 412562,1496513,5428399,19690785,71425666, 259086967,939803018,3409008654,12365718965, 44854977221,162705378247,590191808148, 2140841158159,7765612469020,28168711531526, 102178200690777] |