n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 21 |
4 | 101 |
5 | 501 |
6 | 2561 |
7 | 13345 |
8 | 70561 |
9 | 377281 |
10 | 2035285 |
11 | 11059205 |
12 | 60454005 |
13 | 332138405 |
14 | 1832677185 |
15 | 10150115201 |
16 | 56398558081 |
17 | 314273655745 |
18 | 1755700634981 |
19 | 9830544087221 |
20 | 55155558312901 |
21 | 310027473436821 |
22 | 1745567243959105 |
23 | 9843160519978401 |
24 | 55582528404717601 |
[1,1,5,21,101,501,2561,13345,70561,377281,2035285, 11059205,60454005,332138405,1832677185, 10150115201,56398558081,314273655745, 1755700634981,9830544087221,55155558312901, 310027473436821,1745567243959105,9843160519978401, 55582528404717601] |