n | a(n) |
---|---|
1 | 21 |
2 | 377 |
3 | 610 |
4 | 2584 |
5 | 17711 |
6 | 75025 |
7 | 196418 |
8 | 514229 |
9 | 63245986 |
10 | 701408733 |
11 | 1134903170 |
12 | 1836311903 |
13 | 2971215073 |
14 | 17167680177565 |
15 | 72723460248141 |
16 | 117669030460994 |
17 | 2880067194370816120 |
18 | 19740274219868223167 |
19 | 354224848179261915075 |
20 | 1500520536206896083277 |
[21,377,610,2584,17711,75025,196418,514229, 63245986,701408733,1134903170,1836311903, 2971215073,17167680177565,72723460248141, 117669030460994,2880067194370816120, 19740274219868223167,354224848179261915075, 1500520536206896083277] |