n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -5 |
3 | 10 |
4 | 20 |
5 | -220 |
6 | 624 |
7 | 940 |
8 | -15220 |
9 | 52090 |
10 | 49310 |
11 | -1254070 |
12 | 4951430 |
13 | 2039640 |
14 | -113088840 |
15 | 505430700 |
16 | -42379684 |
17 | -10748423405 |
18 | 53899438385 |
19 | -29300595085 |
20 | -1054751754795 |
21 | 5914944193114 |
22 | -5760460624890 |
23 | -105478270711140 |
24 | 661900612108440 |
25 | -914408777470140 |
[1,1,-5,10,20,-220,624,940,-15220,52090,49310, -1254070,4951430,2039640,-113088840,505430700, -42379684,-10748423405,53899438385,-29300595085, -1054751754795,5914944193114,-5760460624890, -105478270711140,661900612108440,-914408777470140] |