n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 18 |
4 | 80 |
5 | 200 |
6 | 420 |
7 | 756 |
8 | 1472 |
9 | 2358 |
10 | 3860 |
11 | 5500 |
12 | 8304 |
13 | 11232 |
14 | 15484 |
15 | 21090 |
16 | 27392 |
17 | 34816 |
18 | 44604 |
19 | 55404 |
20 | 69840 |
21 | 84294 |
22 | 102124 |
23 | 122452 |
24 | 147264 |
25 | 173800 |
26 | 203476 |
27 | 237762 |
28 | 276752 |
29 | 318304 |
30 | 368340 |
31 | 418500 |
32 | 478208 |
33 | 541398 |
34 | 611524 |
35 | 689780 |
36 | 774576 |
37 | 863136 |
38 | 963148 |
[0,4,18,80,200,420,756,1472,2358,3860,5500,8304, 11232,15484,21090,27392,34816,44604,55404,69840, 84294,102124,122452,147264,173800,203476,237762, 276752,318304,368340,418500,478208,541398,611524, 689780,774576,863136,963148] |