n | a(n) |
---|---|
3 | 9 |
4 | 16 |
5 | 65 |
6 | 114 |
7 | 457 |
8 | 800 |
9 | 3201 |
10 | 5602 |
11 | 22409 |
12 | 39216 |
13 | 156865 |
14 | 274514 |
15 | 1098057 |
16 | 1921600 |
17 | 7686401 |
18 | 13451202 |
19 | 53804809 |
20 | 94158416 |
21 | 376633665 |
22 | 659108914 |
23 | 2636435657 |
24 | 4613762400 |
25 | 18455049601 |
26 | 32296336802 |
27 | 129185347209 |
28 | 226074357616 |
29 | 904297430465 |
30 | 1582520503314 |
[9,16,65,114,457,800,3201,5602,22409,39216,156865, 274514,1098057,1921600,7686401,13451202,53804809, 94158416,376633665,659108914,2636435657, 4613762400,18455049601,32296336802,129185347209, 226074357616,904297430465,1582520503314] |