n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 42 |
6 | 140 |
7 | 481 |
8 | 1740 |
9 | 6517 |
10 | 25071 |
11 | 98909 |
12 | 398029 |
13 | 1630133 |
14 | 6776780 |
15 | 28545990 |
16 | 121634875 |
17 | 523592344 |
18 | 2274403486 |
19 | 9959936977 |
20 | 43935043231 |
21 | 195083730751 |
22 | 871408143675 |
23 | 3913633986985 |
24 | 17664173896079 |
25 | 80090608816509 |
26 | 364658344537497 |
27 | 1666732699542652 |
28 | 7645308725638059 |
[1,1,2,5,14,42,140,481,1740,6517,25071,98909, 398029,1630133,6776780,28545990,121634875, 523592344,2274403486,9959936977,43935043231, 195083730751,871408143675,3913633986985, 17664173896079,80090608816509,364658344537497, 1666732699542652,7645308725638059] |