n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 270 |
5 | 162 |
6 | 1134 |
7 | 28350 |
8 | 127575 |
9 | 26244 |
10 | 216513000 |
11 | 31827411000 |
12 | 2482538058000 |
13 | 151992126000 |
14 | 11171421261000 |
15 | 55857106305000 |
16 | 398819739017700000 |
17 | 1022614715430000 |
18 | 2479933649891880000 |
19 | 22505397872768811000000 |
20 | 135032387236612866000000 |
21 | 51557820581252185200000 |
22 | 752545881176354010900000 |
[1,1,3,9,270,162,1134,28350,127575,26244, 216513000,31827411000,2482538058000,151992126000, 11171421261000,55857106305000,398819739017700000, 1022614715430000,2479933649891880000, 22505397872768811000000,135032387236612866000000, 51557820581252185200000,752545881176354010900000] |