n | a(n) |
---|---|
1 | 2 |
2 | 10 |
3 | 33 |
4 | 88 |
5 | 245 |
6 | 936 |
7 | 5383 |
8 | 40832 |
9 | 363609 |
10 | 3629800 |
11 | 39918131 |
12 | 479003328 |
13 | 6227022997 |
14 | 87178293944 |
15 | 1307674371375 |
16 | 20922789892096 |
17 | 355687428100913 |
18 | 6402373705733832 |
19 | 121645100408838859 |
20 | 2432902008176648000 |
[2,10,33,88,245,936,5383,40832,363609,3629800, 39918131,479003328,6227022997,87178293944, 1307674371375,20922789892096,355687428100913, 6402373705733832,121645100408838859, 2432902008176648000] |