n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 21 |
5 | 83 |
6 | 348 |
7 | 1499 |
8 | 6623 |
9 | 29805 |
10 | 136080 |
11 | 628537 |
12 | 2930993 |
13 | 13772875 |
14 | 65132877 |
15 | 309654749 |
16 | 1478735723 |
17 | 7088395315 |
18 | 34089167561 |
19 | 164401035964 |
20 | 794796779867 |
21 | 3850714202599 |
22 | 18691819399273 |
23 | 90885695919131 |
24 | 442583806441116 |
25 | 2158167279743194 |
26 | 10536761139563128 |
27 | 51500580609300347 |
[1,1,2,6,21,83,348,1499,6623,29805,136080,628537, 2930993,13772875,65132877,309654749,1478735723, 7088395315,34089167561,164401035964,794796779867, 3850714202599,18691819399273,90885695919131, 442583806441116,2158167279743194, 10536761139563128,51500580609300347] |