n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 21 |
3 | 159 |
4 | 1369 |
5 | 12131 |
6 | 111489 |
7 | 1042310 |
8 | 9878188 |
9 | 94345595 |
10 | 905236045 |
11 | 8698907855 |
12 | 83509981377 |
13 | 798911473287 |
14 | 7596665295846 |
15 | 71585365842419 |
16 | 666055801137389 |
17 | 6089025714101416 |
18 | 54304588402962717 |
19 | 467144137463862047 |
20 | 3798557443794080777 |
21 | 27983895459969702990 |
[1,3,21,159,1369,12131,111489,1042310,9878188, 94345595,905236045,8698907855,83509981377, 798911473287,7596665295846,71585365842419, 666055801137389,6089025714101416, 54304588402962717,467144137463862047, 3798557443794080777,27983895459969702990] |