n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -1 |
3 | 2 |
4 | -10 |
5 | 46 |
6 | -226 |
7 | 1532 |
8 | -11880 |
9 | 96136 |
10 | -882376 |
11 | 9179312 |
12 | -102310000 |
13 | 1223945776 |
14 | -15941391376 |
15 | 222827194592 |
16 | -3303846357120 |
17 | 52077034777216 |
18 | -871329939918976 |
19 | 15375474411183872 |
20 | -285315305595562240 |
21 | 5562663216718387456 |
22 | -113653337185088018176 |
[0,1,-1,2,-10,46,-226,1532,-11880,96136,-882376, 9179312,-102310000,1223945776,-15941391376, 222827194592,-3303846357120,52077034777216, -871329939918976,15375474411183872, -285315305595562240,5562663216718387456, -113653337185088018176] |