n | a(n) |
---|---|
3 | 1 |
4 | 6 |
5 | -25 |
6 | -135 |
7 | 1834 |
8 | -3668 |
9 | -110692 |
10 | 1339020 |
11 | -1181664 |
12 | -164709864 |
13 | 2206092096 |
14 | 395662176 |
15 | -463716547776 |
16 | 7029335571840 |
17 | 8900411569920 |
18 | -2265668505227520 |
19 | 38689597829053440 |
20 | 92447263589921280 |
21 | -17785648201625856000 |
22 | 338957966532455424000 |
[1,6,-25,-135,1834,-3668,-110692,1339020,-1181664, -164709864,2206092096,395662176,-463716547776, 7029335571840,8900411569920,-2265668505227520, 38689597829053440,92447263589921280, -17785648201625856000,338957966532455424000] |