n | a(n) |
---|---|
1 | 1 |
2 | 8 |
3 | 16 |
4 | 120 |
5 | 456 |
6 | 2272 |
7 | 11044 |
8 | 49200 |
9 | 236196 |
10 | 1113296 |
11 | 5157772 |
12 | 24352896 |
13 | 114256032 |
14 | 534574312 |
15 | 2511482164 |
16 | 11778946872 |
17 | 55224573264 |
18 | 259130295272 |
19 | 1215413555584 |
20 | 5700599522328 |
21 | 26741489475588 |
22 | 125432405841016 |
[1,8,16,120,456,2272,11044,49200,236196,1113296, 5157772,24352896,114256032,534574312,2511482164, 11778946872,55224573264,259130295272, 1215413555584,5700599522328,26741489475588, 125432405841016] |