n | a(n) |
---|---|
1 | 13 |
2 | 57 |
3 | 332 |
4 | 1573 |
5 | 8357 |
6 | 43004 |
7 | 223270 |
8 | 1168723 |
9 | 6098749 |
10 | 31928221 |
11 | 167211867 |
12 | 875862454 |
13 | 4590346691 |
14 | 24059996616 |
15 | 126124391879 |
16 | 661229366397 |
17 | 3466736635802 |
18 | 18176404398121 |
19 | 95303022729314 |
20 | 499702347782465 |
[13,57,332,1573,8357,43004,223270,1168723,6098749, 31928221,167211867,875862454,4590346691, 24059996616,126124391879,661229366397, 3466736635802,18176404398121,95303022729314, 499702347782465] |