n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 40 |
6 | 122 |
7 | 380 |
8 | 1217 |
9 | 3967 |
10 | 13137 |
11 | 44053 |
12 | 149321 |
13 | 510735 |
14 | 1760687 |
15 | 6111171 |
16 | 21338857 |
17 | 74906438 |
18 | 264192659 |
19 | 935757437 |
20 | 3327107090 |
21 | 11870683108 |
22 | 42486960839 |
23 | 152506832992 |
24 | 548875377127 |
25 | 1980241926132 |
26 | 7160483990345 |
27 | 25946243999559 |
28 | 94199923539220 |
29 | 342620238726110 |
30 | 1248274347651947 |
[1,1,2,5,14,40,122,380,1217,3967,13137,44053, 149321,510735,1760687,6111171,21338857,74906438, 264192659,935757437,3327107090,11870683108, 42486960839,152506832992,548875377127, 1980241926132,7160483990345,25946243999559, 94199923539220,342620238726110,1248274347651947] |