n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 14 |
3 | 40 |
4 | 105 |
5 | 256 |
6 | 594 |
7 | 1324 |
8 | 2860 |
9 | 6020 |
10 | 12402 |
11 | 25088 |
12 | 49963 |
13 | 98160 |
14 | 190570 |
15 | 366108 |
16 | 696787 |
17 | 1315072 |
18 | 2463300 |
19 | 4582600 |
20 | 8472280 |
21 | 15574520 |
22 | 28481220 |
23 | 51833600 |
24 | 93914325 |
25 | 169457708 |
26 | 304597382 |
27 | 545556512 |
28 | 973877245 |
29 | 1733053440 |
30 | 3075011478 |
[1,4,14,40,105,256,594,1324,2860,6020,12402,25088, 49963,98160,190570,366108,696787,1315072,2463300, 4582600,8472280,15574520,28481220,51833600, 93914325,169457708,304597382,545556512,973877245, 1733053440,3075011478] |