n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 9 |
6 | 19 |
7 | 47 |
8 | 113 |
9 | 287 |
10 | 733 |
11 | 1920 |
12 | 5064 |
13 | 13557 |
14 | 36553 |
15 | 99455 |
16 | 272293 |
17 | 750262 |
18 | 2077751 |
19 | 5781971 |
20 | 16156866 |
21 | 45321635 |
22 | 127566689 |
23 | 360191846 |
24 | 1019926954 |
25 | 2895648896 |
26 | 8240832570 |
27 | 23505344031 |
28 | 67183161970 |
29 | 192393195097 |
30 | 551946691853 |
[1,1,1,2,4,9,19,47,113,287,733,1920,5064,13557, 36553,99455,272293,750262,2077751,5781971, 16156866,45321635,127566689,360191846,1019926954, 2895648896,8240832570,23505344031,67183161970, 192393195097,551946691853] |