n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 24 |
5 | 96 |
6 | 384 |
7 | 1374 |
8 | 4718 |
9 | 16275 |
10 | 57749 |
11 | 206756 |
12 | 739780 |
13 | 2637348 |
14 | 9378840 |
15 | 33318804 |
16 | 118439044 |
17 | 421340612 |
18 | 1499388117 |
19 | 5335199213 |
20 | 18980987054 |
21 | 67522942850 |
22 | 240204885524 |
23 | 854523535096 |
24 | 3040023558788 |
25 | 10815153542594 |
[1,2,6,24,96,384,1374,4718,16275,57749,206756, 739780,2637348,9378840,33318804,118439044, 421340612,1499388117,5335199213,18980987054, 67522942850,240204885524,854523535096, 3040023558788,10815153542594] |