n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 15 |
4 | 47 |
5 | 155 |
6 | 535 |
7 | 1917 |
8 | 7009 |
9 | 26111 |
10 | 99101 |
11 | 381016 |
12 | 1480405 |
13 | 5811708 |
14 | 23018829 |
15 | 91810619 |
16 | 368562020 |
17 | 1488525491 |
18 | 6042748077 |
19 | 24642209677 |
20 | 100920566643 |
21 | 414918597849 |
22 | 1711739597157 |
23 | 7084248465495 |
24 | 29406311074639 |
25 | 122394910630888 |
26 | 510701913238447 |
27 | 2135928069931072 |
28 | 8952651919363658 |
[1,2,5,15,47,155,535,1917,7009,26111,99101,381016, 1480405,5811708,23018829,91810619,368562020, 1488525491,6042748077,24642209677,100920566643, 414918597849,1711739597157,7084248465495, 29406311074639,122394910630888,510701913238447, 2135928069931072,8952651919363658] |