n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 64 |
4 | 225 |
5 | 784 |
6 | 2704 |
7 | 9216 |
8 | 31329 |
9 | 106276 |
10 | 360000 |
11 | 1218816 |
12 | 4124961 |
13 | 13957696 |
14 | 47224384 |
15 | 159769600 |
16 | 540516001 |
17 | 1828588644 |
18 | 6186137104 |
19 | 20927672896 |
20 | 70798034241 |
21 | 239508444816 |
22 | 810252019600 |
23 | 2741064339456 |
24 | 9272956793409 |
[4,16,64,225,784,2704,9216,31329,106276,360000, 1218816,4124961,13957696,47224384,159769600, 540516001,1828588644,6186137104,20927672896, 70798034241,239508444816,810252019600, 2741064339456,9272956793409] |