n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 9 |
4 | 70 |
5 | 795 |
6 | 11961 |
7 | 224504 |
8 | 5051866 |
9 | 132523155 |
10 | 3969912160 |
11 | 133678842902 |
12 | 4997280555576 |
13 | 205320100093953 |
14 | 9195224163850830 |
15 | 445775353262707365 |
16 | 23255990676521697670 |
17 | 1299028117862237432959 |
18 | 77348967890083608924045 |
[1,1,2,9,70,795,11961,224504,5051866,132523155, 3969912160,133678842902,4997280555576, 205320100093953,9195224163850830, 445775353262707365,23255990676521697670, 1299028117862237432959,77348967890083608924045] |