n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 7 |
4 | 18 |
5 | 43 |
6 | 112 |
7 | 282 |
8 | 740 |
9 | 1940 |
10 | 5182 |
11 | 13916 |
12 | 37826 |
13 | 103391 |
14 | 284815 |
15 | 788636 |
16 | 2195414 |
17 | 6137025 |
18 | 17223354 |
19 | 48495640 |
20 | 136961527 |
21 | 387819558 |
22 | 1100757411 |
23 | 3130895452 |
24 | 8922294498 |
25 | 25470279123 |
26 | 72823983735 |
27 | 208515456498 |
28 | 597824919725 |
29 | 1716072103910 |
30 | 4931540188084 |
[1,1,3,7,18,43,112,282,740,1940,5182,13916,37826, 103391,284815,788636,2195414,6137025,17223354, 48495640,136961527,387819558,1100757411, 3130895452,8922294498,25470279123,72823983735, 208515456498,597824919725,1716072103910, 4931540188084] |