n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -4 |
3 | 35 |
4 | -455 |
5 | 7735 |
6 | -161336 |
7 | 3973212 |
8 | -112587210 |
9 | 3603324835 |
10 | -128433778935 |
11 | 5042279130343 |
12 | -216113991649920 |
13 | 10038333251577820 |
14 | -502213976534135280 |
15 | 26920671954736535620 |
16 | -1539171664433009622090 |
17 | 93492751831594011076131 |
18 | -6012423991038631627857900 |
[1,1,-4,35,-455,7735,-161336,3973212,-112587210, 3603324835,-128433778935,5042279130343, -216113991649920,10038333251577820, -502213976534135280,26920671954736535620, -1539171664433009622090,93492751831594011076131, -6012423991038631627857900] |