n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 8 |
4 | 36 |
5 | 196 |
6 | 1248 |
7 | 9128 |
8 | 75520 |
9 | 697936 |
10 | 7130400 |
11 | 79830272 |
12 | 972224064 |
13 | 12798573376 |
14 | 181124475392 |
15 | 2742464277632 |
16 | 44241677392896 |
17 | 757593444234496 |
18 | 13725165351006720 |
19 | 262293328557596672 |
20 | 5273316901853946880 |
[1,2,8,36,196,1248,9128,75520,697936,7130400, 79830272,972224064,12798573376,181124475392, 2742464277632,44241677392896,757593444234496, 13725165351006720,262293328557596672, 5273316901853946880] |