n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 6 |
6 | 12 |
7 | 26 |
8 | 57 |
9 | 141 |
10 | 333 |
11 | 885 |
12 | 2259 |
13 | 6391 |
14 | 17302 |
15 | 51685 |
16 | 147937 |
17 | 460561 |
18 | 1389093 |
19 | 4504136 |
20 | 14127767 |
21 | 47719998 |
22 | 155559696 |
23 | 542178148 |
24 | 1835105103 |
25 | 6600158865 |
26 | 23035501468 |
27 | 85428655084 |
28 | 307266398440 |
29 | 1168951871972 |
30 | 4331125790382 |
31 | 16897269822235 |
[1,1,1,2,3,6,12,26,57,141,333,885,2259,6391,17302, 51685,147937,460561,1389093,4504136,14127767, 47719998,155559696,542178148,1835105103, 6600158865,23035501468,85428655084,307266398440, 1168951871972,4331125790382,16897269822235] |