n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 26 |
3 | 140 |
4 | 777 |
5 | 4425 |
6 | 25755 |
7 | 152675 |
8 | 919139 |
9 | 5606255 |
10 | 34578292 |
11 | 215322310 |
12 | 1351978807 |
13 | 8550394455 |
14 | 54419811354 |
15 | 348309105300 |
16 | 2240486766555 |
17 | 14476490777175 |
18 | 93914850905862 |
19 | 611489638708140 |
20 | 3994697746533171 |
21 | 26175407271617955 |
22 | 171991872078871311 |
[1,5,26,140,777,4425,25755,152675,919139,5606255, 34578292,215322310,1351978807,8550394455, 54419811354,348309105300,2240486766555, 14476490777175,93914850905862,611489638708140, 3994697746533171,26175407271617955, 171991872078871311] |