n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 16 |
5 | 45 |
6 | 126 |
7 | 357 |
8 | 1016 |
9 | 2907 |
10 | 8350 |
11 | 24068 |
12 | 69576 |
13 | 201643 |
14 | 585690 |
15 | 1704510 |
16 | 4969152 |
17 | 14508939 |
18 | 42422022 |
19 | 124191258 |
20 | 363985680 |
21 | 1067892399 |
22 | 3136046298 |
23 | 9217554129 |
24 | 27114249960 |
25 | 79818194925 |
26 | 235128465026 |
27 | 693085098852 |
28 | 2044217638456 |
29 | 6032675068061 |
[1,2,6,16,45,126,357,1016,2907,8350,24068,69576, 201643,585690,1704510,4969152,14508939,42422022, 124191258,363985680,1067892399,3136046298, 9217554129,27114249960,79818194925,235128465026, 693085098852,2044217638456,6032675068061] |