n | a(n) |
---|---|
13 | 2 |
14 | 10 |
15 | 53 |
16 | 220 |
17 | 845 |
18 | 2975 |
19 | 9936 |
20 | 31640 |
21 | 97283 |
22 | 290173 |
23 | 844729 |
24 | 2408213 |
25 | 6746197 |
26 | 18613290 |
27 | 50688554 |
28 | 136464665 |
29 | 363724034 |
30 | 960862781 |
31 | 2518380075 |
32 | 6554072749 |
33 | 16949040877 |
34 | 43580221577 |
35 | 111475092069 |
36 | 283799832989 |
[2,10,53,220,845,2975,9936,31640,97283,290173, 844729,2408213,6746197,18613290,50688554, 136464665,363724034,960862781,2518380075, 6554072749,16949040877,43580221577,111475092069, 283799832989] |