n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 24 |
6 | 75 |
7 | 269 |
8 | 1095 |
9 | 5039 |
10 | 26084 |
11 | 150356 |
12 | 952526 |
13 | 6553011 |
14 | 48553418 |
15 | 385693800 |
16 | 3277413802 |
17 | 29741002168 |
18 | 287555932433 |
19 | 2952769116993 |
20 | 32079033571080 |
21 | 367336668735826 |
22 | 4419518218479215 |
23 | 55733223965845539 |
24 | 735448682261126767 |
25 | 10142738983005750681 |
[1,2,4,9,24,75,269,1095,5039,26084,150356,952526, 6553011,48553418,385693800,3277413802,29741002168, 287555932433,2952769116993,32079033571080, 367336668735826,4419518218479215, 55733223965845539,735448682261126767, 10142738983005750681] |