n | a(n) |
---|---|
4 | 3 |
5 | 280 |
6 | 5265 |
7 | 47040 |
8 | 271250 |
9 | 1170288 |
10 | 4105710 |
11 | 12334080 |
12 | 32837805 |
13 | 79365000 |
14 | 177200023 |
15 | 370319040 |
16 | 731732820 |
17 | 1377981920 |
18 | 2488927500 |
19 | 4334174208 |
20 | 7307669895 |
21 | 11972250360 |
22 | 19116135885 |
23 | 29823640000 |
24 | 45562619718 |
25 | 68291480400 |
26 | 100588847450 |
27 | 145809331200 |
[3,280,5265,47040,271250,1170288,4105710,12334080, 32837805,79365000,177200023,370319040,731732820, 1377981920,2488927500,4334174208,7307669895, 11972250360,19116135885,29823640000,45562619718, 68291480400,100588847450,145809331200] |