n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 2 |
4 | 4 |
5 | 13 |
6 | 32 |
7 | 93 |
8 | 274 |
9 | 861 |
10 | 2830 |
11 | 9707 |
12 | 34662 |
13 | 128442 |
14 | 492747 |
15 | 1952714 |
16 | 7978537 |
17 | 33552502 |
18 | 145002884 |
19 | 643093018 |
20 | 2923285048 |
21 | 13604173759 |
22 | 64747674282 |
23 | 314856179539 |
24 | 1562985778041 |
25 | 7914087230121 |
26 | 40843626440195 |
27 | 214695804264578 |
28 | 1148729745111018 |
29 | 6252380887804219 |
[1,2,2,4,13,32,93,274,861,2830,9707,34662,128442, 492747,1952714,7978537,33552502,145002884, 643093018,2923285048,13604173759,64747674282, 314856179539,1562985778041,7914087230121, 40843626440195,214695804264578,1148729745111018, 6252380887804219] |