n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 14 |
4 | 50 |
5 | 186 |
6 | 714 |
7 | 2794 |
8 | 11050 |
9 | 43946 |
10 | 175274 |
11 | 700074 |
12 | 2798250 |
13 | 11188906 |
14 | 44747434 |
15 | 178973354 |
16 | 715860650 |
17 | 2863377066 |
18 | 11453377194 |
19 | 45813246634 |
20 | 183252462250 |
21 | 733008800426 |
22 | 2932033104554 |
23 | 11728128223914 |
24 | 46912504507050 |
25 | 187650001250986 |
26 | 750599971449514 |
[0,1,4,14,50,186,714,2794,11050,43946,175274, 700074,2798250,11188906,44747434,178973354, 715860650,2863377066,11453377194,45813246634, 183252462250,733008800426,2932033104554, 11728128223914,46912504507050,187650001250986, 750599971449514] |