n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 4 |
6 | 12 |
7 | 21 |
8 | 56 |
9 | 111 |
10 | 261 |
11 | 462 |
12 | 1431 |
13 | 1875 |
14 | 4696 |
15 | 9410 |
16 | 20099 |
17 | 24034 |
18 | 77884 |
19 | 79925 |
20 | 266786 |
21 | 358096 |
22 | 658594 |
23 | 796571 |
24 | 3227163 |
25 | 2980476 |
26 | 6268017 |
27 | 10167660 |
28 | 24321735 |
29 | 21477012 |
30 | 85964698 |
[1,1,1,3,4,12,21,56,111,261,462,1431,1875,4696, 9410,20099,24034,77884,79925,266786,358096,658594, 796571,3227163,2980476,6268017,10167660,24321735, 21477012,85964698] |