n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 28 |
4 | 100 |
5 | 356 |
6 | 1268 |
7 | 4516 |
8 | 16084 |
9 | 57284 |
10 | 204020 |
11 | 726628 |
12 | 2587924 |
13 | 9217028 |
14 | 32826932 |
15 | 116914852 |
16 | 416398420 |
17 | 1483024964 |
18 | 5281871732 |
19 | 18811665124 |
20 | 66998738836 |
21 | 238619546756 |
22 | 849856117940 |
23 | 3026807447332 |
24 | 10780134577876 |
25 | 38394018628292 |
26 | 136742325040628 |
27 | 487015012378468 |
28 | 1734529687216660 |
[1,2,8,28,100,356,1268,4516,16084,57284,204020, 726628,2587924,9217028,32826932,116914852, 416398420,1483024964,5281871732,18811665124, 66998738836,238619546756,849856117940, 3026807447332,10780134577876,38394018628292, 136742325040628,487015012378468,1734529687216660] |