n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 10 |
4 | 25 |
5 | 67 |
6 | 172 |
7 | 448 |
8 | 1165 |
9 | 3025 |
10 | 7864 |
11 | 20434 |
12 | 53101 |
13 | 137995 |
14 | 358600 |
15 | 931888 |
16 | 2421673 |
17 | 6293137 |
18 | 16353820 |
19 | 42498250 |
20 | 110439121 |
21 | 286995331 |
22 | 745807444 |
23 | 1938110800 |
24 | 5036519125 |
25 | 13088273857 |
26 | 34012163632 |
27 | 88386542578 |
[1,4,10,25,67,172,448,1165,3025,7864,20434,53101, 137995,358600,931888,2421673,6293137,16353820, 42498250,110439121,286995331,745807444,1938110800, 5036519125,13088273857,34012163632,88386542578] |