n | a(n) |
---|---|
1 | 10 |
2 | 19 |
3 | 99 |
4 | 427 |
5 | 1531 |
6 | 5031 |
7 | 15763 |
8 | 47784 |
9 | 140586 |
10 | 401745 |
11 | 1116450 |
12 | 3022129 |
13 | 7979699 |
14 | 20573716 |
15 | 51835099 |
16 | 127704345 |
17 | 307858090 |
18 | 726741861 |
19 | 1681297548 |
20 | 3815152314 |
21 | 8498764539 |
22 | 18601381870 |
23 | 40034714647 |
24 | 84794977698 |
25 | 176874740063 |
[10,19,99,427,1531,5031,15763,47784,140586,401745, 1116450,3022129,7979699,20573716,51835099, 127704345,307858090,726741861,1681297548, 3815152314,8498764539,18601381870,40034714647, 84794977698,176874740063] |