n | a(n) |
---|---|
4 | 1 |
5 | 5 |
6 | 24 |
7 | 91 |
8 | 340 |
9 | 1224 |
10 | 4365 |
11 | 15521 |
12 | 55311 |
13 | 197964 |
14 | 712243 |
15 | 2577105 |
16 | 9375360 |
17 | 34284971 |
18 | 125977464 |
19 | 464938189 |
20 | 1722817415 |
21 | 6407307543 |
22 | 23909159417 |
23 | 89491715105 |
24 | 335908316844 |
25 | 1264097675775 |
26 | 4768430557020 |
27 | 18027183349395 |
[1,5,24,91,340,1224,4365,15521,55311,197964, 712243,2577105,9375360,34284971,125977464, 464938189,1722817415,6407307543,23909159417, 89491715105,335908316844,1264097675775, 4768430557020,18027183349395] |