n | a(n) |
---|---|
0 | 1 |
1 | -4 |
2 | 2 |
3 | 0 |
4 | -1 |
5 | -4 |
6 | -14 |
7 | -48 |
8 | -165 |
9 | -572 |
10 | -2002 |
11 | -7072 |
12 | -25194 |
13 | -90440 |
14 | -326876 |
15 | -1188640 |
16 | -4345965 |
17 | -15967980 |
18 | -58929450 |
19 | -218349120 |
20 | -811985790 |
21 | -3029594040 |
22 | -11338026180 |
23 | -42550029600 |
24 | -160094486370 |
25 | -603784920024 |
26 | -2282138106804 |
27 | -8643460269248 |
28 | -32798844771700 |
[1,-4,2,0,-1,-4,-14,-48,-165,-572,-2002,-7072, -25194,-90440,-326876,-1188640,-4345965,-15967980, -58929450,-218349120,-811985790,-3029594040, -11338026180,-42550029600,-160094486370, -603784920024,-2282138106804,-8643460269248, -32798844771700] |