n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 32 |
6 | 122 |
7 | 544 |
8 | 2770 |
9 | 13102 |
10 | 53324 |
11 | 201822 |
12 | 744369 |
13 | 2681622 |
14 | 9781781 |
15 | 35830358 |
16 | 134471953 |
17 | 510679902 |
18 | 1948913086 |
19 | 7413069078 |
20 | 28251926154 |
21 | 106925701022 |
22 | 405357452874 |
23 | 1528103687814 |
24 | 5781674554622 |
25 | 21790410540302 |
[1,2,4,10,32,122,544,2770,13102,53324,201822, 744369,2681622,9781781,35830358,134471953, 510679902,1948913086,7413069078,28251926154, 106925701022,405357452874,1528103687814, 5781674554622,21790410540302] |