n | a(n) |
---|---|
1 | 2 |
2 | 13 |
3 | 78 |
4 | 471 |
5 | 2828 |
6 | 16969 |
7 | 101814 |
8 | 610887 |
9 | 3665324 |
10 | 21991945 |
11 | 131951670 |
12 | 791710023 |
13 | 4750260140 |
14 | 28501560841 |
15 | 171009365046 |
16 | 1026056190279 |
17 | 6156337141676 |
18 | 36938022850057 |
19 | 221628137100342 |
20 | 1329768822602055 |
[2,13,78,471,2828,16969,101814,610887,3665324, 21991945,131951670,791710023,4750260140, 28501560841,171009365046,1026056190279, 6156337141676,36938022850057,221628137100342, 1329768822602055] |