n | a(n) |
---|---|
2 | 3 |
3 | 40 |
4 | 285 |
5 | 1382 |
6 | 5472 |
7 | 18912 |
8 | 59472 |
9 | 174568 |
10 | 486352 |
11 | 1300936 |
12 | 3368528 |
13 | 8494280 |
14 | 20955536 |
15 | 50756232 |
16 | 121033104 |
17 | 284778120 |
18 | 662333776 |
19 | 1524945352 |
20 | 3479910352 |
21 | 7878810440 |
22 | 17713527824 |
23 | 39574755848 |
24 | 87916721424 |
25 | 194311523592 |
[3,40,285,1382,5472,18912,59472,174568,486352, 1300936,3368528,8494280,20955536,50756232, 121033104,284778120,662333776,1524945352, 3479910352,7878810440,17713527824,39574755848, 87916721424,194311523592] |