n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 27 |
3 | 98 |
4 | 315 |
5 | 917 |
6 | 2486 |
7 | 6345 |
8 | 15427 |
9 | 35965 |
10 | 80897 |
11 | 176296 |
12 | 373652 |
13 | 772381 |
14 | 1561130 |
15 | 3091476 |
16 | 6008896 |
17 | 11480887 |
18 | 21591830 |
19 | 40016045 |
20 | 73157052 |
21 | 132052382 |
22 | 235535752 |
23 | 415433365 |
24 | 725043875 |
25 | 1252857043 |
26 | 2144601961 |
27 | 3638413830 |
[1,6,27,98,315,917,2486,6345,15427,35965,80897, 176296,373652,772381,1561130,3091476,6008896, 11480887,21591830,40016045,73157052,132052382, 235535752,415433365,725043875,1252857043, 2144601961,3638413830] |