n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 6 |
5 | 16 |
6 | 43 |
7 | 116 |
8 | 329 |
9 | 947 |
10 | 2762 |
11 | 8176 |
12 | 24469 |
13 | 73896 |
14 | 224960 |
15 | 689623 |
16 | 2126947 |
17 | 6595273 |
18 | 20548732 |
19 | 64298032 |
20 | 201969823 |
21 | 636639087 |
22 | 2013174695 |
23 | 6384574754 |
24 | 20302081620 |
25 | 64716553655 |
26 | 206764068578 |
27 | 661983640080 |
28 | 2123573339921 |
29 | 6824597707820 |
30 | 21969711674581 |
[1,1,1,3,6,16,43,116,329,947,2762,8176,24469, 73896,224960,689623,2126947,6595273,20548732, 64298032,201969823,636639087,2013174695, 6384574754,20302081620,64716553655,206764068578, 661983640080,2123573339921,6824597707820, 21969711674581] |