n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 19 |
4 | 66 |
5 | 244 |
6 | 946 |
7 | 3801 |
8 | 15697 |
9 | 66234 |
10 | 284339 |
11 | 1237983 |
12 | 5453611 |
13 | 24263355 |
14 | 108865901 |
15 | 492051006 |
16 | 2238220336 |
17 | 10238568080 |
18 | 47070014643 |
19 | 217363784060 |
20 | 1007794226777 |
21 | 4689545704246 |
22 | 21893712581740 |
23 | 102520882301832 |
24 | 481393173378979 |
[1,2,6,19,66,244,946,3801,15697,66234,284339, 1237983,5453611,24263355,108865901,492051006, 2238220336,10238568080,47070014643,217363784060, 1007794226777,4689545704246,21893712581740, 102520882301832,481393173378979] |