n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 8 |
4 | 19 |
5 | 49 |
6 | 157 |
7 | 600 |
8 | 2161 |
9 | 7479 |
10 | 25639 |
11 | 88307 |
12 | 306281 |
13 | 1066691 |
14 | 3716461 |
15 | 12931923 |
16 | 44953528 |
17 | 156232914 |
18 | 543075295 |
19 | 1888104965 |
20 | 6564738537 |
21 | 22824408491 |
22 | 79353796243 |
23 | 275886391011 |
24 | 959166284191 |
25 | 3334724626513 |
26 | 11593837466750 |
[1,1,8,19,49,157,600,2161,7479,25639,88307,306281, 1066691,3716461,12931923,44953528,156232914, 543075295,1888104965,6564738537,22824408491, 79353796243,275886391011,959166284191, 3334724626513,11593837466750] |