n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 30 |
3 | 145 |
4 | 660 |
5 | 2777 |
6 | 11160 |
7 | 42805 |
8 | 158490 |
9 | 568050 |
10 | 1980607 |
11 | 6735380 |
12 | 22402610 |
13 | 73022755 |
14 | 233692345 |
15 | 735350970 |
16 | 2278153310 |
17 | 6956560935 |
18 | 20958613740 |
19 | 62354061740 |
20 | 183332498533 |
21 | 533074229590 |
22 | 1533842417185 |
23 | 4369816273820 |
24 | 12332669124455 |
25 | 34495668855729 |
[1,5,30,145,660,2777,11160,42805,158490,568050, 1980607,6735380,22402610,73022755,233692345, 735350970,2278153310,6956560935,20958613740, 62354061740,183332498533,533074229590, 1533842417185,4369816273820,12332669124455, 34495668855729] |