n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 2 |
7 | 6 |
8 | 19 |
9 | 57 |
10 | 161 |
11 | 433 |
12 | 1122 |
13 | 2826 |
14 | 6968 |
15 | 16916 |
16 | 40630 |
17 | 96958 |
18 | 230732 |
19 | 549278 |
20 | 1311473 |
21 | 3146659 |
22 | 7596281 |
23 | 18460921 |
24 | 45163078 |
25 | 111164142 |
26 | 275067208 |
27 | 683577528 |
28 | 1704485046 |
29 | 4260677154 |
30 | 10669252349 |
[1,1,1,1,1,1,2,6,19,57,161,433,1122,2826,6968, 16916,40630,96958,230732,549278,1311473,3146659, 7596281,18460921,45163078,111164142,275067208, 683577528,1704485046,4260677154,10669252349] |