n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 0 |
3 | 2 |
4 | 3 |
5 | 40 |
6 | 230 |
7 | 4664 |
8 | 69160 |
9 | 2692320 |
10 | 92337072 |
11 | 7377183360 |
12 | 561596031744 |
13 | 94107667481472 |
14 | 15571512343805184 |
15 | 5506994273113257984 |
16 | 1955013641428681233408 |
17 | 1459378050438033715961856 |
18 | 1101502067162420292961916928 |
[0,1,0,2,3,40,230,4664,69160,2692320,92337072, 7377183360,561596031744,94107667481472, 15571512343805184,5506994273113257984, 1955013641428681233408,1459378050438033715961856, 1101502067162420292961916928] |