n | a(n) |
---|---|
0 | 1 |
1 | 10 |
2 | 65 |
3 | 330 |
4 | 1430 |
5 | 5512 |
6 | 19415 |
7 | 63570 |
8 | 195910 |
9 | 573430 |
10 | 1605340 |
11 | 4322110 |
12 | 11240645 |
13 | 28341730 |
14 | 69488650 |
15 | 166096270 |
16 | 387890625 |
17 | 886698670 |
18 | 1987322415 |
19 | 4373271870 |
20 | 9461022285 |
21 | 20144164040 |
22 | 42254620785 |
23 | 87398226990 |
24 | 178396331100 |
25 | 359618772656 |
26 | 716409453320 |
[1,10,65,330,1430,5512,19415,63570,195910,573430, 1605340,4322110,11240645,28341730,69488650, 166096270,387890625,886698670,1987322415, 4373271870,9461022285,20144164040,42254620785, 87398226990,178396331100,359618772656, 716409453320] |