n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 6 |
4 | 16 |
5 | 31 |
6 | 76 |
7 | 201 |
8 | 481 |
9 | 1141 |
10 | 2806 |
11 | 6876 |
12 | 16651 |
13 | 40456 |
14 | 98641 |
15 | 240081 |
16 | 583801 |
17 | 1420726 |
18 | 3458056 |
19 | 8414391 |
20 | 20474356 |
21 | 49824601 |
22 | 121246801 |
23 | 295040781 |
24 | 717957766 |
25 | 1747108756 |
26 | 4251463651 |
27 | 10345607376 |
28 | 25175294881 |
29 | 61262300641 |
[1,1,1,6,16,31,76,201,481,1141,2806,6876,16651, 40456,98641,240081,583801,1420726,3458056,8414391, 20474356,49824601,121246801,295040781,717957766, 1747108756,4251463651,10345607376,25175294881, 61262300641] |