n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 512 |
3 | 19684 |
4 | 262656 |
5 | 1972809 |
6 | 10340352 |
7 | 42326416 |
8 | 144558080 |
9 | 429746905 |
10 | 1144558080 |
11 | 2787694596 |
12 | 6304338432 |
13 | 13392193969 |
14 | 26965385216 |
15 | 51835553344 |
16 | 95684861952 |
17 | 170423429841 |
18 | 294044152320 |
19 | 493111127620 |
20 | 806044152320 |
21 | 1287391174201 |
22 | 2013313370112 |
[0,1,512,19684,262656,1972809,10340352,42326416, 144558080,429746905,1144558080,2787694596, 6304338432,13392193969,26965385216,51835553344, 95684861952,170423429841,294044152320, 493111127620,806044152320,1287391174201, 2013313370112] |