n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 36 |
4 | 36 |
5 | 900 |
6 | 400 |
7 | 19600 |
8 | 4900 |
9 | 396900 |
10 | 63504 |
11 | 7683984 |
12 | 853776 |
13 | 144288144 |
14 | 11778624 |
15 | 2650190400 |
16 | 165636900 |
17 | 47869064100 |
18 | 2363904400 |
19 | 853369488400 |
20 | 34134779536 |
21 | 15053437775376 |
22 | 497634306624 |
23 | 263248548204096 |
24 | 7312459672336 |
25 | 4570287295210000 |
26 | 108172480360000 |
[1,1,4,36,36,900,400,19600,4900,396900,63504, 7683984,853776,144288144,11778624,2650190400, 165636900,47869064100,2363904400,853369488400, 34134779536,15053437775376,497634306624, 263248548204096,7312459672336,4570287295210000, 108172480360000] |