n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 2 |
4 | 3 |
5 | 8 |
6 | 23 |
7 | 68 |
8 | 221 |
9 | 709 |
10 | 2344 |
11 | 8006 |
12 | 27585 |
13 | 95114 |
14 | 335645 |
15 | 1202053 |
16 | 4267640 |
17 | 15317698 |
18 | 55248527 |
19 | 200711160 |
20 | 733697248 |
21 | 2696576651 |
22 | 9941588060 |
23 | 36928160817 |
24 | 136800727634 |
25 | 508780005068 |
26 | 1901946851732 |
27 | 7133247301621 |
28 | 26782446410398 |
29 | 100862459737318 |
[1,0,2,3,8,23,68,221,709,2344,8006,27585,95114, 335645,1202053,4267640,15317698,55248527, 200711160,733697248,2696576651,9941588060, 36928160817,136800727634,508780005068, 1901946851732,7133247301621,26782446410398, 100862459737318] |