n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 120 |
6 | 720 |
7 | 5040 |
8 | 40320 |
9 | 362880 |
10 | 2943360 |
11 | 21898800 |
12 | 152622000 |
13 | 1017952680 |
14 | 6623303544 |
15 | 42700751022 |
16 | 276054834902 |
17 | 1805409270031 |
18 | 12020754177001 |
19 | 80930279045116 |
20 | 548117873866228 |
21 | 3720269813727312 |
22 | 25239622338694272 |
23 | 170893063638209664 |
[1,1,2,6,24,120,720,5040,40320,362880,2943360, 21898800,152622000,1017952680,6623303544, 42700751022,276054834902,1805409270031, 12020754177001,80930279045116,548117873866228, 3720269813727312,25239622338694272, 170893063638209664] |