n | a(n) |
---|---|
1 | 1 |
2 | 64 |
3 | 1510 |
4 | 17600 |
5 | 130835 |
6 | 713216 |
7 | 3098604 |
8 | 11320320 |
9 | 36074325 |
10 | 102925120 |
11 | 268038706 |
12 | 646519744 |
13 | 1460878055 |
14 | 3120396800 |
15 | 6346379480 |
16 | 12363588096 |
17 | 23184837609 |
18 | 42023883840 |
19 | 73881649150 |
20 | 126362703040 |
21 | 210792998011 |
22 | 343726413824 |
23 | 548946959300 |
24 | 860095808000 |
[1,64,1510,17600,130835,713216,3098604,11320320, 36074325,102925120,268038706,646519744,1460878055, 3120396800,6346379480,12363588096,23184837609, 42023883840,73881649150,126362703040,210792998011, 343726413824,548946959300,860095808000] |