n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 11 |
5 | 26 |
6 | 84 |
7 | 220 |
8 | 742 |
9 | 2070 |
10 | 7197 |
11 | 20922 |
12 | 74432 |
13 | 223010 |
14 | 805708 |
15 | 2470392 |
16 | 9027576 |
17 | 28187178 |
18 | 103920850 |
19 | 329292906 |
20 | 1222553336 |
21 | 3921481206 |
22 | 14641490905 |
23 | 47450199350 |
24 | 177987479208 |
25 | 581924348298 |
26 | 2191300828800 |
27 | 7219235616842 |
28 | 27274167110054 |
29 | 90456438360198 |
30 | 342703672881624 |
31 | 1143317551856284 |
[1,1,2,4,11,26,84,220,742,2070,7197,20922,74432, 223010,805708,2470392,9027576,28187178,103920850, 329292906,1222553336,3921481206,14641490905, 47450199350,177987479208,581924348298, 2191300828800,7219235616842,27274167110054, 90456438360198,342703672881624,1143317551856284] |