n | a(n) |
---|---|
1 | 21 |
2 | 60 |
3 | 190 |
4 | 600 |
5 | 1946 |
6 | 6264 |
7 | 20440 |
8 | 66208 |
9 | 216452 |
10 | 702768 |
11 | 2298936 |
12 | 7470944 |
13 | 24444168 |
14 | 79466336 |
15 | 260022112 |
16 | 845441152 |
17 | 2766427344 |
18 | 8995380672 |
19 | 29434608608 |
20 | 95712808320 |
21 | 313191301792 |
22 | 1018418848640 |
23 | 3332470833536 |
24 | 10836405217792 |
[21,60,190,600,1946,6264,20440,66208,216452, 702768,2298936,7470944,24444168,79466336, 260022112,845441152,2766427344,8995380672, 29434608608,95712808320,313191301792, 1018418848640,3332470833536,10836405217792] |