n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 104 |
4 | 752 |
5 | 5996 |
6 | 50512 |
7 | 444256 |
8 | 4027360 |
9 | 37383044 |
10 | 353486320 |
11 | 3393093696 |
12 | 32976302800 |
13 | 323839605124 |
14 | 3208549483216 |
15 | 32033691247528 |
16 | 321955764477936 |
17 | 3254812520854980 |
18 | 33075467402453872 |
19 | 337670437247448728 |
20 | 3461635652745799136 |
21 | 35620112071990294784 |
[4,16,104,752,5996,50512,444256,4027360,37383044, 353486320,3393093696,32976302800,323839605124, 3208549483216,32033691247528,321955764477936, 3254812520854980,33075467402453872, 337670437247448728,3461635652745799136, 35620112071990294784] |