n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 30 |
4 | 137 |
5 | 588 |
6 | 2415 |
7 | 9600 |
8 | 37209 |
9 | 141336 |
10 | 528049 |
11 | 1945800 |
12 | 7086555 |
13 | 25550547 |
14 | 91319973 |
15 | 323890062 |
16 | 1140985116 |
17 | 3995155506 |
18 | 13913280006 |
19 | 48216776266 |
20 | 166355744244 |
21 | 571636515369 |
22 | 1957015021744 |
23 | 6677155551312 |
[1,6,30,137,588,2415,9600,37209,141336,528049, 1945800,7086555,25550547,91319973,323890062, 1140985116,3995155506,13913280006,48216776266, 166355744244,571636515369,1957015021744, 6677155551312] |