n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 20 |
5 | 36 |
6 | 64 |
7 | 120 |
8 | 240 |
9 | 499 |
10 | 1060 |
11 | 2314 |
12 | 5252 |
13 | 12360 |
14 | 29632 |
15 | 70992 |
16 | 168096 |
17 | 392465 |
18 | 905940 |
19 | 2075314 |
20 | 4730052 |
21 | 10735516 |
22 | 24258688 |
23 | 54553000 |
24 | 122076240 |
25 | 271914499 |
26 | 603183508 |
27 | 1333268098 |
28 | 2937818900 |
29 | 6455143760 |
30 | 14146816640 |
31 | 30929336736 |
32 | 67473335104 |
[1,1,4,10,20,36,64,120,240,499,1060,2314,5252, 12360,29632,70992,168096,392465,905940,2075314, 4730052,10735516,24258688,54553000,122076240, 271914499,603183508,1333268098,2937818900, 6455143760,14146816640,30929336736,67473335104] |