n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 8 |
3 | 60 |
4 | 448 |
5 | 3344 |
6 | 24960 |
7 | 186304 |
8 | 1390592 |
9 | 10379520 |
10 | 77473792 |
11 | 578272256 |
12 | 4316282880 |
13 | 32217174016 |
14 | 240472260608 |
15 | 1794909388800 |
16 | 13397386067968 |
17 | 99999450988544 |
18 | 746406063636480 |
19 | 5571250705137664 |
20 | 41584381386555392 |
[0,1,8,60,448,3344,24960,186304,1390592,10379520, 77473792,578272256,4316282880,32217174016, 240472260608,1794909388800,13397386067968, 99999450988544,746406063636480,5571250705137664, 41584381386555392] |