n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 22 |
4 | 105 |
5 | 501 |
6 | 2456 |
7 | 12160 |
8 | 60801 |
9 | 306130 |
10 | 1550255 |
11 | 7887034 |
12 | 40281720 |
13 | 206405967 |
14 | 1060602800 |
15 | 5463059772 |
16 | 28199365873 |
17 | 145832364580 |
18 | 755420838614 |
19 | 3918935839970 |
20 | 20357605331355 |
21 | 105878815699042 |
22 | 551273881133750 |
23 | 2873161931172668 |
24 | 14988243880188600 |
[1,1,5,22,105,501,2456,12160,60801,306130,1550255, 7887034,40281720,206405967,1060602800,5463059772, 28199365873,145832364580,755420838614, 3918935839970,20357605331355,105878815699042, 551273881133750,2873161931172668, 14988243880188600] |