n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 128 |
6 | 928 |
7 | 9280 |
8 | 129152 |
9 | 2515200 |
10 | 68780544 |
11 | 2647000064 |
12 | 143580989440 |
13 | 10988411686912 |
14 | 1187350176604160 |
15 | 181232621966082048 |
16 | 39089521693818912768 |
17 | 11916533065969825808384 |
18 | 5135497592471003032846336 |
19 | 3128995097443083790244380672 |
20 | 2695613904312277811648715554816 |
[1,2,6,24,128,928,9280,129152,2515200,68780544, 2647000064,143580989440,10988411686912, 1187350176604160,181232621966082048, 39089521693818912768,11916533065969825808384, 5135497592471003032846336, 3128995097443083790244380672, 2695613904312277811648715554816] |