n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 16 |
6 | 54 |
7 | 212 |
8 | 827 |
9 | 3369 |
10 | 13653 |
11 | 56052 |
12 | 229004 |
13 | 939935 |
14 | 3843859 |
15 | 15753903 |
16 | 64380796 |
17 | 263475472 |
18 | 1075780425 |
19 | 4397161320 |
20 | 17939394036 |
21 | 73251877235 |
22 | 298646347226 |
23 | 1218453344740 |
[1,1,2,5,16,54,212,827,3369,13653,56052,229004, 939935,3843859,15753903,64380796,263475472, 1075780425,4397161320,17939394036,73251877235, 298646347226,1218453344740] |