n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 6 |
3 | 17 |
4 | 45 |
5 | 116 |
6 | 305 |
7 | 799 |
8 | 2090 |
9 | 5473 |
10 | 14329 |
11 | 37512 |
12 | 98209 |
13 | 257115 |
14 | 673134 |
15 | 1762289 |
16 | 4613733 |
17 | 12078908 |
18 | 31622993 |
19 | 82790071 |
20 | 216747218 |
21 | 567451585 |
22 | 1485607537 |
23 | 3889371024 |
24 | 10182505537 |
25 | 26658145587 |
26 | 69791931222 |
27 | 182717648081 |
[1,3,6,17,45,116,305,799,2090,5473,14329,37512, 98209,257115,673134,1762289,4613733,12078908, 31622993,82790071,216747218,567451585,1485607537, 3889371024,10182505537,26658145587,69791931222, 182717648081] |