n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 21 |
4 | 77 |
5 | 266 |
6 | 882 |
7 | 2850 |
8 | 9042 |
9 | 28314 |
10 | 87802 |
11 | 270270 |
12 | 827190 |
13 | 2520336 |
14 | 7651632 |
15 | 23162976 |
16 | 69954048 |
17 | 210859245 |
18 | 634569201 |
19 | 1907165337 |
20 | 5725520801 |
21 | 17172595110 |
22 | 51465297950 |
23 | 154135675070 |
24 | 461366154990 |
25 | 1380317174145 |
[1,5,21,77,266,882,2850,9042,28314,87802,270270, 827190,2520336,7651632,23162976,69954048, 210859245,634569201,1907165337,5725520801, 17172595110,51465297950,154135675070,461366154990, 1380317174145] |