n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 20 |
4 | 56 |
5 | 220 |
6 | 364 |
7 | 816 |
8 | 1140 |
9 | 2024 |
10 | 4060 |
11 | 4960 |
12 | 8436 |
13 | 11480 |
14 | 13244 |
15 | 17296 |
16 | 24804 |
17 | 34220 |
18 | 37820 |
19 | 50116 |
20 | 59640 |
21 | 64824 |
22 | 82160 |
23 | 95284 |
24 | 117480 |
25 | 152096 |
26 | 171700 |
27 | 182104 |
28 | 204156 |
29 | 215820 |
30 | 240464 |
31 | 341376 |
32 | 374660 |
33 | 428536 |
34 | 447580 |
35 | 551300 |
36 | 573800 |
37 | 644956 |
[1,4,20,56,220,364,816,1140,2024,4060,4960,8436, 11480,13244,17296,24804,34220,37820,50116,59640, 64824,82160,95284,117480,152096,171700,182104, 204156,215820,240464,341376,374660,428536,447580, 551300,573800,644956] |