n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 2 |
5 | 6 |
6 | 8 |
7 | 26 |
8 | 41 |
9 | 145 |
10 | 253 |
11 | 978 |
12 | 1858 |
13 | 7726 |
14 | 15796 |
15 | 69878 |
16 | 152219 |
17 | 711243 |
18 | 1638323 |
19 | 8039510 |
20 | 19467494 |
21 | 99862594 |
22 | 252998224 |
23 | 1351486758 |
24 | 3568259503 |
25 | 19786100599 |
26 | 54263159347 |
27 | 311482467134 |
28 | 884834059454 |
29 | 5245588599330 |
30 | 15397757661092 |
[1,1,1,2,2,6,8,26,41,145,253,978,1858,7726,15796, 69878,152219,711243,1638323,8039510,19467494, 99862594,252998224,1351486758,3568259503, 19786100599,54263159347,311482467134,884834059454, 5245588599330,15397757661092] |