n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 78 |
6 | 313 |
7 | 1306 |
8 | 5653 |
9 | 25088 |
10 | 113685 |
11 | 523522 |
12 | 2443590 |
13 | 11533010 |
14 | 54949539 |
15 | 263933658 |
16 | 1276652682 |
17 | 6213207330 |
18 | 30402727854 |
19 | 149486487326 |
20 | 738184395770 |
21 | 3659440942282 |
22 | 18205043615467 |
23 | 90856842218506 |
24 | 454770531433586 |
25 | 2282393627458496 |
26 | 11483114908752959 |
[1,2,6,21,78,313,1306,5653,25088,113685,523522, 2443590,11533010,54949539,263933658,1276652682, 6213207330,30402727854,149486487326,738184395770, 3659440942282,18205043615467,90856842218506, 454770531433586,2282393627458496, 11483114908752959] |