n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 25 |
4 | 144 |
5 | 841 |
6 | 4900 |
7 | 28561 |
8 | 166464 |
9 | 970225 |
10 | 5654884 |
11 | 32959081 |
12 | 192099600 |
13 | 1119638521 |
14 | 6525731524 |
15 | 38034750625 |
16 | 221682772224 |
17 | 1292061882721 |
18 | 7530688524100 |
19 | 43892069261881 |
20 | 255821727047184 |
21 | 1491038293021225 |
[0,1,4,25,144,841,4900,28561,166464,970225, 5654884,32959081,192099600,1119638521,6525731524, 38034750625,221682772224,1292061882721, 7530688524100,43892069261881,255821727047184, 1491038293021225] |