n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 64 |
4 | 225 |
5 | 784 |
6 | 2601 |
7 | 8464 |
8 | 26896 |
9 | 84100 |
10 | 259081 |
11 | 788544 |
12 | 2374681 |
13 | 7086244 |
14 | 20976400 |
15 | 61653904 |
16 | 180069561 |
17 | 522945424 |
18 | 1510954641 |
19 | 4345446400 |
20 | 12444741136 |
21 | 35502850084 |
22 | 100926300721 |
23 | 285976813824 |
24 | 807886380625 |
25 | 2275928269924 |
[4,16,64,225,784,2601,8464,26896,84100,259081, 788544,2374681,7086244,20976400,61653904, 180069561,522945424,1510954641,4345446400, 12444741136,35502850084,100926300721,285976813824, 807886380625,2275928269924] |