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n | a(n) |
---|---|
1 | 5 |
2 | 25 |
3 | 110 |
4 | 470 |
5 | 1980 |
6 | 8274 |
7 | 34396 |
8 | 142474 |
9 | 588596 |
10 | 2426738 |
11 | 9989292 |
12 | 41065818 |
13 | 168636772 |
14 | 691859842 |
15 | 2836150748 |
16 | 11617837802 |
17 | 47559474708 |
18 | 194575978386 |
19 | 795613053964 |
20 | 3251559375226 |
21 | 13282278193604 |
22 | 54232112235170 |
[5,25,110,470,1980,8274,34396,142474,588596, 2426738,9989292,41065818,168636772,691859842, 2836150748,11617837802,47559474708,194575978386, 795613053964,3251559375226,13282278193604, 54232112235170] |