n | a(n) |
---|---|
1 | 1 |
2 | 20 |
3 | 363 |
4 | 6538 |
5 | 117689 |
6 | 2118408 |
7 | 38131351 |
8 | 686364326 |
9 | 12354557877 |
10 | 222382041796 |
11 | 4002876752339 |
12 | 72051781542114 |
13 | 1296932067758065 |
14 | 23344777219645184 |
15 | 420205989953613327 |
16 | 7563707819165039902 |
17 | 136146740744970718253 |
[1,20,363,6538,117689,2118408,38131351,686364326, 12354557877,222382041796,4002876752339, 72051781542114,1296932067758065,23344777219645184, 420205989953613327,7563707819165039902, 136146740744970718253] |