n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 34 |
3 | 159 |
4 | 788 |
5 | 4117 |
6 | 22143 |
7 | 121079 |
8 | 670811 |
9 | 3764758 |
10 | 21408813 |
11 | 123367344 |
12 | 720303998 |
13 | 4260491461 |
14 | 25523584313 |
15 | 154835572102 |
16 | 950950450917 |
17 | 5911757419002 |
18 | 37193168793829 |
19 | 236764641742504 |
20 | 1524754216743136 |
[1,7,34,159,788,4117,22143,121079,670811,3764758, 21408813,123367344,720303998,4260491461, 25523584313,154835572102,950950450917, 5911757419002,37193168793829,236764641742504, 1524754216743136] |