n | a(n) |
---|---|
1 | 1 |
2 | 68 |
3 | 1659 |
4 | 16464 |
5 | 97935 |
6 | 420708 |
7 | 1443197 |
8 | 4198720 |
9 | 10770597 |
10 | 25016740 |
11 | 53619335 |
12 | 107545296 |
13 | 204013251 |
14 | 369072900 |
15 | 640912665 |
16 | 1074021632 |
17 | 1744341865 |
18 | 2755557252 |
19 | 4246675123 |
20 | 6401066960 |
21 | 9457144599 |
22 | 13720858404 |
[1,68,1659,16464,97935,420708,1443197,4198720, 10770597,25016740,53619335,107545296,204013251, 369072900,640912665,1074021632,1744341865, 2755557252,4246675123,6401066960,9457144599, 13720858404] |