n | a(n) |
---|---|
1 | 174724 |
2 | 145924 |
3 | 234256 |
4 | 622521 |
5 | 1196836 |
6 | 2433600 |
7 | 6012304 |
8 | 15547249 |
9 | 31606884 |
10 | 64818601 |
11 | 152028900 |
12 | 378341401 |
13 | 795240000 |
14 | 1701645001 |
15 | 3917508100 |
16 | 9407060100 |
17 | 20173089024 |
18 | 44278259776 |
19 | 100259623044 |
20 | 236166840900 |
21 | 512492764996 |
[174724,145924,234256,622521,1196836,2433600, 6012304,15547249,31606884,64818601,152028900, 378341401,795240000,1701645001,3917508100, 9407060100,20173089024,44278259776,100259623044, 236166840900,512492764996] |