n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 7 |
5 | 16 |
6 | 40 |
7 | 100 |
8 | 256 |
9 | 663 |
10 | 1741 |
11 | 4620 |
12 | 12376 |
13 | 33416 |
14 | 90853 |
15 | 248515 |
16 | 683429 |
17 | 1888449 |
18 | 5240509 |
19 | 14598709 |
20 | 40810390 |
21 | 114447429 |
22 | 321885675 |
23 | 907723460 |
24 | 2566079622 |
25 | 7270598910 |
26 | 20643413513 |
27 | 58727234739 |
28 | 167373377361 |
[1,1,2,3,7,16,40,100,256,663,1741,4620,12376, 33416,90853,248515,683429,1888449,5240509, 14598709,40810390,114447429,321885675,907723460, 2566079622,7270598910,20643413513,58727234739, 167373377361] |