n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 3 |
4 | 6 |
5 | 21 |
6 | 108 |
7 | 693 |
8 | 5220 |
9 | 44901 |
10 | 433350 |
11 | 4632147 |
12 | 54285714 |
13 | 691817841 |
14 | 9522592632 |
15 | 140763435957 |
16 | 2223647197416 |
17 | 37379712048201 |
18 | 666163875275370 |
19 | 12544974494087427 |
20 | 248900998255922430 |
21 | 5189286039892108749 |
22 | 113417589882858625188 |
23 | 2593036709186072053077 |
24 | 61892628250817153398284 |
[0,1,2,3,6,21,108,693,5220,44901,433350,4632147, 54285714,691817841,9522592632,140763435957, 2223647197416,37379712048201,666163875275370, 12544974494087427,248900998255922430, 5189286039892108749,113417589882858625188, 2593036709186072053077,61892628250817153398284] |