n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 14 |
4 | 36 |
5 | 86 |
6 | 210 |
7 | 500 |
8 | 1194 |
9 | 2822 |
10 | 6660 |
11 | 15638 |
12 | 36642 |
13 | 85604 |
14 | 199626 |
15 | 464630 |
16 | 1079892 |
17 | 2506550 |
18 | 5811762 |
19 | 13462484 |
20 | 31159914 |
21 | 72071654 |
22 | 166599972 |
23 | 384912086 |
24 | 888906306 |
25 | 2052031172 |
26 | 4735527306 |
27 | 10925175254 |
28 | 25198866036 |
29 | 58108609526 |
30 | 133973643090 |
[1,2,6,14,36,86,210,500,1194,2822,6660,15638, 36642,85604,199626,464630,1079892,2506550,5811762, 13462484,31159914,72071654,166599972,384912086, 888906306,2052031172,4735527306,10925175254, 25198866036,58108609526,133973643090] |