n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 16 |
4 | 75 |
5 | 336 |
6 | 1536 |
7 | 7155 |
8 | 33627 |
9 | 158974 |
10 | 755508 |
11 | 3606648 |
12 | 17281776 |
13 | 83068766 |
14 | 400368741 |
15 | 1934204661 |
16 | 9363509531 |
17 | 45411373098 |
18 | 220593832062 |
19 | 1073127878085 |
20 | 5227288727580 |
21 | 25492636911240 |
22 | 124457166046832 |
23 | 608207193661734 |
24 | 2974913417047440 |
[1,1,3,16,75,336,1536,7155,33627,158974,755508, 3606648,17281776,83068766,400368741,1934204661, 9363509531,45411373098,220593832062,1073127878085, 5227288727580,25492636911240,124457166046832, 608207193661734,2974913417047440] |