n | a(n) |
---|---|
0 | 2 |
1 | 11 |
2 | 64 |
3 | 426 |
4 | 3216 |
5 | 27240 |
6 | 256320 |
7 | 2656080 |
8 | 30078720 |
9 | 369774720 |
10 | 4906137600 |
11 | 69894316800 |
12 | 1064341555200 |
13 | 17255074636800 |
14 | 296754903244800 |
15 | 5396772116736000 |
16 | 103484118786048000 |
17 | 2086818140639232000 |
18 | 44150769074700288000 |
19 | 977904962186600448000 |
[2,11,64,426,3216,27240,256320,2656080,30078720, 369774720,4906137600,69894316800,1064341555200, 17255074636800,296754903244800,5396772116736000, 103484118786048000,2086818140639232000, 44150769074700288000,977904962186600448000] |