n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 4 |
4 | 25 |
5 | 100 |
6 | 481 |
7 | 1924 |
8 | 8425 |
9 | 33700 |
10 | 141361 |
11 | 565444 |
12 | 2320825 |
13 | 9283300 |
14 | 37664641 |
15 | 150658564 |
16 | 607417225 |
17 | 2429668900 |
18 | 9761722321 |
19 | 39046889284 |
20 | 156574977625 |
21 | 626299910500 |
22 | 2508686426401 |
23 | 10034745705604 |
24 | 40170363882025 |
[0,0,1,4,25,100,481,1924,8425,33700,141361,565444, 2320825,9283300,37664641,150658564,607417225, 2429668900,9761722321,39046889284,156574977625, 626299910500,2508686426401,10034745705604, 40170363882025] |