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n | a(n) |
---|---|
1 | 0 |
2 | 3 |
3 | 1199 |
4 | 62325 |
5 | 787715 |
6 | 5618555 |
7 | 25916198 |
8 | 97813140 |
9 | 301112167 |
10 | 819634842 |
11 | 1998446413 |
12 | 4516545383 |
13 | 9434578601 |
14 | 18751556647 |
15 | 35316005556 |
16 | 63799458547 |
17 | 110998185424 |
18 | 187305554285 |
19 | 306223868165 |
20 | 488948073586 |
21 | 761311432412 |
[0,3,1199,62325,787715,5618555,25916198,97813140, 301112167,819634842,1998446413,4516545383, 9434578601,18751556647,35316005556,63799458547, 110998185424,187305554285,306223868165, 488948073586,761311432412] |