n | a(n) |
---|---|
0 | 1 |
1 | 15 |
2 | 157 |
3 | 1431 |
4 | 12229 |
5 | 101199 |
6 | 823789 |
7 | 6649287 |
8 | 53436757 |
9 | 428483583 |
10 | 3431885821 |
11 | 27471332343 |
12 | 219836173285 |
13 | 1758953038767 |
14 | 14072683703053 |
15 | 112585721544999 |
16 | 900702823089013 |
17 | 7205690916768351 |
18 | 57645801049792285 |
[1,15,157,1431,12229,101199,823789,6649287, 53436757,428483583,3431885821,27471332343, 219836173285,1758953038767,14072683703053, 112585721544999,900702823089013,7205690916768351, 57645801049792285] |