n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 16 |
4 | 63 |
5 | 288 |
6 | 1461 |
7 | 8013 |
8 | 46896 |
9 | 290916 |
10 | 1905162 |
11 | 13131193 |
12 | 95005565 |
13 | 719862361 |
14 | 5700083435 |
15 | 47075439047 |
16 | 404760508374 |
17 | 3617018777976 |
18 | 33539368302476 |
19 | 322222320833572 |
20 | 3202873385842352 |
21 | 32895350423011349 |
[1,2,5,16,63,288,1461,8013,46896,290916,1905162, 13131193,95005565,719862361,5700083435, 47075439047,404760508374,3617018777976, 33539368302476,322222320833572,3202873385842352, 32895350423011349] |