n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 9 |
6 | 27 |
7 | 92 |
8 | 313 |
9 | 1083 |
10 | 3753 |
11 | 13063 |
12 | 45581 |
13 | 159501 |
14 | 559549 |
15 | 1967878 |
16 | 6937267 |
17 | 24511653 |
18 | 86797683 |
19 | 308003549 |
20 | 1095155727 |
21 | 3901490015 |
22 | 13924590847 |
23 | 49784694997 |
24 | 178293760747 |
25 | 639543538859 |
26 | 2297555097259 |
27 | 8265957750659 |
[1,2,1,2,3,9,27,92,313,1083,3753,13063,45581, 159501,559549,1967878,6937267,24511653,86797683, 308003549,1095155727,3901490015,13924590847, 49784694997,178293760747,639543538859, 2297555097259,8265957750659] |