n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 7 |
5 | 15 |
6 | 56 |
7 | 176 |
8 | 1002 |
9 | 5604 |
10 | 53174 |
11 | 526823 |
12 | 10619863 |
13 | 214481126 |
14 | 9035836076 |
15 | 476715857290 |
16 | 51820051838712 |
17 | 7479565078510584 |
18 | 2645418340688763701 |
19 | 1318520401612270233223 |
20 | 1774758704783877366657989 |
21 | 4025091510519029370421431033 |
[1,1,2,3,7,15,56,176,1002,5604,53174,526823, 10619863,214481126,9035836076,476715857290, 51820051838712,7479565078510584, 2645418340688763701,1318520401612270233223, 1774758704783877366657989, 4025091510519029370421431033] |