n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 140 |
4 | 5740 |
5 | 700280 |
6 | 255602200 |
7 | 279628806800 |
8 | 917462115110800 |
9 | 9029662136920493600 |
10 | 266600774592577573540000 |
11 | 23613897008762965998731960000 |
12 | 6274708327065504088149055143160000 |
[1,2,10,140,5740,700280,255602200,279628806800, 917462115110800,9029662136920493600, 266600774592577573540000, 23613897008762965998731960000, 6274708327065504088149055143160000] |