n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 72 |
3 | 648 |
4 | 3200 |
5 | 11250 |
6 | 31752 |
7 | 76832 |
8 | 165888 |
9 | 328050 |
10 | 605000 |
11 | 1054152 |
12 | 1752192 |
13 | 2798978 |
14 | 4321800 |
15 | 6480000 |
16 | 9469952 |
17 | 13530402 |
18 | 18948168 |
19 | 26064200 |
20 | 35280000 |
21 | 47064402 |
22 | 61960712 |
23 | 80594208 |
24 | 103680000 |
25 | 132031250 |
26 | 166567752 |
27 | 208324872 |
[0,2,72,648,3200,11250,31752,76832,165888,328050, 605000,1054152,1752192,2798978,4321800,6480000, 9469952,13530402,18948168,26064200,35280000, 47064402,61960712,80594208,103680000,132031250, 166567752,208324872] |