n | a(n) |
---|---|
9 | 1 |
10 | 18 |
11 | 164 |
12 | 1050 |
13 | 5367 |
14 | 23232 |
15 | 88125 |
16 | 299992 |
17 | 932849 |
18 | 2685747 |
19 | 7235237 |
20 | 18392853 |
21 | 44427807 |
22 | 102552852 |
23 | 227298680 |
24 | 485679518 |
25 | 1003915611 |
26 | 2013360324 |
27 | 3927664296 |
28 | 7469755903 |
29 | 13876848040 |
30 | 25225619858 |
31 | 44939663514 |
32 | 78569415198 |
33 | 134974052794 |
34 | 228088973049 |
[1,18,164,1050,5367,23232,88125,299992,932849, 2685747,7235237,18392853,44427807,102552852, 227298680,485679518,1003915611,2013360324, 3927664296,7469755903,13876848040,25225619858, 44939663514,78569415198,134974052794,228088973049] |