n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 12 |
4 | 54 |
5 | 260 |
6 | 1310 |
7 | 6821 |
8 | 36413 |
9 | 198227 |
10 | 1096259 |
11 | 6141764 |
12 | 34784432 |
13 | 198828308 |
14 | 1145544680 |
15 | 6645621536 |
16 | 38786564126 |
17 | 227585926704 |
18 | 1341757498470 |
19 | 7944249448686 |
20 | 47217102715624 |
21 | 281615520373954 |
22 | 1684957401786580 |
23 | 10110628493454482 |
24 | 60830401073611514 |
[1,3,12,54,260,1310,6821,36413,198227,1096259, 6141764,34784432,198828308,1145544680,6645621536, 38786564126,227585926704,1341757498470, 7944249448686,47217102715624,281615520373954, 1684957401786580,10110628493454482, 60830401073611514] |