n | a(n) |
---|---|
3 | 1 |
4 | 1 |
5 | 9 |
6 | 29 |
7 | 112 |
8 | 405 |
9 | 1514 |
10 | 5565 |
11 | 20249 |
12 | 73416 |
13 | 265616 |
14 | 957677 |
15 | 3441282 |
16 | 12329838 |
17 | 44062706 |
18 | 157105923 |
19 | 559009643 |
20 | 1985301783 |
21 | 7038496811 |
22 | 24913917722 |
23 | 88058727525 |
24 | 310832221932 |
25 | 1095854282575 |
26 | 3859201682187 |
27 | 13576884290502 |
28 | 47719628447310 |
29 | 167579774234059 |
[1,1,9,29,112,405,1514,5565,20249,73416,265616, 957677,3441282,12329838,44062706,157105923, 559009643,1985301783,7038496811,24913917722, 88058727525,310832221932,1095854282575, 3859201682187,13576884290502,47719628447310, 167579774234059] |