n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 3 |
4 | 3 |
5 | 30 |
6 | 15 |
7 | 315 |
8 | 105 |
9 | 3780 |
10 | 945 |
11 | 51975 |
12 | 10395 |
13 | 810810 |
14 | 135135 |
15 | 14189175 |
16 | 2027025 |
17 | 275675400 |
18 | 34459425 |
19 | 5892561675 |
20 | 654729075 |
21 | 137493105750 |
22 | 13749310575 |
23 | 3478575575475 |
24 | 316234143225 |
25 | 94870242967500 |
26 | 7905853580625 |
27 | 2774954606799375 |
28 | 213458046676875 |
29 | 86663966950811250 |
30 | 6190283353629375 |
[0,1,3,3,30,15,315,105,3780,945,51975,10395, 810810,135135,14189175,2027025,275675400,34459425, 5892561675,654729075,137493105750,13749310575, 3478575575475,316234143225,94870242967500, 7905853580625,2774954606799375,213458046676875, 86663966950811250,6190283353629375] |