n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 5 |
6 | 15 |
7 | 35 |
8 | 70 |
9 | 146 |
10 | 360 |
11 | 980 |
12 | 2620 |
13 | 6620 |
14 | 16276 |
15 | 40740 |
16 | 105820 |
17 | 280780 |
18 | 743700 |
19 | 1950756 |
20 | 5101470 |
21 | 13429110 |
22 | 35693650 |
23 | 95433290 |
24 | 255434106 |
25 | 683340050 |
26 | 1829832350 |
27 | 4913953750 |
28 | 13239959100 |
29 | 35758234300 |
30 | 96702404700 |
31 | 261768987260 |
32 | 709479051420 |
[1,1,1,1,1,5,15,35,70,146,360,980,2620,6620,16276, 40740,105820,280780,743700,1950756,5101470, 13429110,35693650,95433290,255434106,683340050, 1829832350,4913953750,13239959100,35758234300, 96702404700,261768987260,709479051420] |