n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 28 |
4 | 130 |
5 | 532 |
6 | 2528 |
7 | 11232 |
8 | 54018 |
9 | 248164 |
10 | 1212082 |
11 | 5682304 |
12 | 27893742 |
13 | 133023140 |
14 | 655148986 |
15 | 3154342858 |
16 | 15603065572 |
17 | 75639961162 |
18 | 374862248858 |
19 | 1828672158604 |
20 | 9074950870092 |
21 | 44449162462130 |
22 | 220966384291864 |
23 | 1085680487597732 |
24 | 5401935260776376 |
25 | 26619308952466454 |
26 | 132536670446683276 |
[1,2,8,28,130,532,2528,11232,54018,248164,1212082, 5682304,27893742,133023140,655148986,3154342858, 15603065572,75639961162,374862248858, 1828672158604,9074950870092,44449162462130, 220966384291864,1085680487597732,5401935260776376, 26619308952466454,132536670446683276] |