n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 216 |
5 | 38070 |
6 | 1314600 |
7 | 21191208 |
8 | 207830308 |
9 | 1442794332 |
10 | 7775083960 |
11 | 34530764200 |
12 | 131660992164 |
13 | 443702617356 |
14 | 1350258600008 |
15 | 3771242866680 |
16 | 9789675562020 |
17 | 23856321869260 |
18 | 55015308882264 |
19 | 120855465245464 |
20 | 254284702668580 |
21 | 514791197224860 |
22 | 1006655249550696 |
[0,0,0,216,38070,1314600,21191208,207830308, 1442794332,7775083960,34530764200,131660992164, 443702617356,1350258600008,3771242866680, 9789675562020,23856321869260,55015308882264, 120855465245464,254284702668580,514791197224860, 1006655249550696] |