n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 16 |
5 | 51 |
6 | 175 |
7 | 587 |
8 | 2128 |
9 | 7800 |
10 | 29627 |
11 | 112965 |
12 | 437356 |
13 | 1708992 |
14 | 6786643 |
15 | 27181584 |
16 | 109870626 |
17 | 446436891 |
18 | 1826522803 |
19 | 7521234588 |
20 | 31168555884 |
21 | 129805992237 |
22 | 542972032376 |
23 | 2280107924147 |
24 | 9614642418922 |
25 | 40701846220612 |
26 | 172919505735539 |
27 | 736924493782813 |
28 | 3149528055432525 |
[1,1,2,5,16,51,175,587,2128,7800,29627,112965, 437356,1708992,6786643,27181584,109870626, 446436891,1826522803,7521234588,31168555884, 129805992237,542972032376,2280107924147, 9614642418922,40701846220612,172919505735539, 736924493782813,3149528055432525] |