n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 12 |
5 | 28 |
6 | 65 |
7 | 151 |
8 | 350 |
9 | 807 |
10 | 1850 |
11 | 4221 |
12 | 9597 |
13 | 21760 |
14 | 49215 |
15 | 111032 |
16 | 249856 |
17 | 560835 |
18 | 1255854 |
19 | 2805969 |
20 | 6256784 |
21 | 13925698 |
22 | 30941050 |
23 | 68634679 |
24 | 152009239 |
25 | 336152787 |
26 | 742276931 |
27 | 1636747349 |
28 | 3604206106 |
29 | 7926412320 |
30 | 17410413153 |
[1,1,2,5,12,28,65,151,350,807,1850,4221,9597, 21760,49215,111032,249856,560835,1255854,2805969, 6256784,13925698,30941050,68634679,152009239, 336152787,742276931,1636747349,3604206106, 7926412320,17410413153] |