n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 5 |
3 | 16 |
4 | 45 |
5 | 116 |
6 | 286 |
7 | 680 |
8 | 1581 |
9 | 3604 |
10 | 8106 |
11 | 18008 |
12 | 39650 |
13 | 86568 |
14 | 187804 |
15 | 404944 |
16 | 868989 |
17 | 1856180 |
18 | 3950194 |
19 | 8376056 |
20 | 17708310 |
21 | 37329016 |
22 | 78499620 |
23 | 164682416 |
24 | 344789970 |
25 | 720430216 |
26 | 1502768996 |
27 | 3129355120 |
28 | 6507087396 |
29 | 13510929104 |
[0,1,5,16,45,116,286,680,1581,3604,8106,18008, 39650,86568,187804,404944,868989,1856180,3950194, 8376056,17708310,37329016,78499620,164682416, 344789970,720430216,1502768996,3129355120, 6507087396,13510929104] |