n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 9 |
5 | 20 |
6 | 48 |
7 | 115 |
8 | 286 |
9 | 719 |
10 | 1842 |
11 | 4766 |
12 | 12486 |
13 | 32973 |
14 | 87811 |
15 | 235381 |
16 | 634847 |
17 | 1721159 |
18 | 4688676 |
19 | 12826228 |
20 | 35221832 |
21 | 97055181 |
22 | 268282855 |
23 | 743724984 |
24 | 2067174645 |
25 | 5759636510 |
26 | 16083734329 |
27 | 45007066269 |
28 | 126186554308 |
29 | 354426847597 |
[1,2,4,9,20,48,115,286,719,1842,4766,12486,32973, 87811,235381,634847,1721159,4688676,12826228, 35221832,97055181,268282855,743724984,2067174645, 5759636510,16083734329,45007066269,126186554308, 354426847597] |