n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 33 |
5 | 91 |
6 | 298 |
7 | 910 |
8 | 3017 |
9 | 9945 |
10 | 34207 |
11 | 119369 |
12 | 429250 |
13 | 1574224 |
14 | 5916148 |
15 | 22699830 |
16 | 89003059 |
17 | 356058540 |
18 | 1453080087 |
19 | 6044132794 |
20 | 25612598436 |
21 | 110503627621 |
22 | 485161348047 |
23 | 2166488899642 |
24 | 9835209912767 |
25 | 45370059225318 |
26 | 212582817739535 |
27 | 1011306624512711 |
[1,1,4,10,33,91,298,910,3017,9945,34207,119369, 429250,1574224,5916148,22699830,89003059, 356058540,1453080087,6044132794,25612598436, 110503627621,485161348047,2166488899642, 9835209912767,45370059225318,212582817739535, 1011306624512711] |