n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -1 |
3 | 2 |
4 | 11 |
5 | -50 |
6 | -225 |
7 | 1624 |
8 | 6769 |
9 | -67284 |
10 | -269325 |
11 | 3416930 |
12 | 13339535 |
13 | -206070150 |
14 | -790943153 |
15 | 14409322928 |
16 | 54631129553 |
17 | -1146901283528 |
18 | -4308105301929 |
19 | 102417740732658 |
20 | 381922055502195 |
21 | -10142299865511450 |
[1,0,-1,2,11,-50,-225,1624,6769,-67284,-269325, 3416930,13339535,-206070150,-790943153, 14409322928,54631129553,-1146901283528, -4308105301929,102417740732658,381922055502195, -10142299865511450] |