n | a(n) |
---|---|
1 | 1 |
2 | 16 |
3 | 38 |
4 | 103 |
5 | 281 |
6 | 826 |
7 | 2421 |
8 | 7104 |
9 | 20732 |
10 | 61087 |
11 | 179751 |
12 | 529548 |
13 | 1561475 |
14 | 4603482 |
15 | 13574654 |
16 | 40041939 |
17 | 118101915 |
18 | 348367166 |
19 | 1027637463 |
20 | 3031343374 |
21 | 8942116280 |
22 | 26378505409 |
23 | 77814052747 |
24 | 229545502386 |
25 | 677142752205 |
26 | 1997520929872 |
[1,16,38,103,281,826,2421,7104,20732,61087,179751, 529548,1561475,4603482,13574654,40041939, 118101915,348367166,1027637463,3031343374, 8942116280,26378505409,77814052747,229545502386, 677142752205,1997520929872] |