n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 15 |
3 | 105 |
4 | 945 |
5 | 4158 |
6 | 75075 |
7 | 579150 |
8 | 34459425 |
9 | 339489150 |
10 | 16499172690 |
11 | 1724913508500 |
12 | 878428175625 |
13 | 131358797955000 |
14 | 252664626678750 |
15 | 3891675750482520 |
16 | 221643095476699771875 |
17 | 208605266331011550000 |
18 | 32498195069133543750 |
19 | 807994071847270157850000 |
20 | 125885476393804690593030 |
[1,3,15,105,945,4158,75075,579150,34459425, 339489150,16499172690,1724913508500,878428175625, 131358797955000,252664626678750,3891675750482520, 221643095476699771875,208605266331011550000, 32498195069133543750,807994071847270157850000, 125885476393804690593030] |