n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 8 |
5 | 16 |
6 | 64 |
7 | 264 |
8 | 1580 |
9 | 10648 |
10 | 84320 |
11 | 750380 |
12 | 7455312 |
13 | 81566928 |
14 | 974988768 |
15 | 12636692720 |
16 | 176505029160 |
17 | 2642791002368 |
18 | 42224138928712 |
19 | 716984262871596 |
20 | 12893605560786944 |
[1,2,3,8,16,64,264,1580,10648,84320,750380, 7455312,81566928,974988768,12636692720, 176505029160,2642791002368,42224138928712, 716984262871596,12893605560786944] |