n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 4 |
3 | 16 |
4 | 36 |
5 | 144 |
6 | 400 |
7 | 1600 |
8 | 4900 |
9 | 19600 |
10 | 63504 |
11 | 254016 |
12 | 853776 |
13 | 3415104 |
14 | 11778624 |
15 | 47114496 |
16 | 165636900 |
17 | 662547600 |
18 | 2363904400 |
19 | 9455617600 |
20 | 34134779536 |
21 | 136539118144 |
22 | 497634306624 |
23 | 1990537226496 |
24 | 7312459672336 |
[1,4,4,16,36,144,400,1600,4900,19600,63504,254016, 853776,3415104,11778624,47114496,165636900, 662547600,2363904400,9455617600,34134779536, 136539118144,497634306624,1990537226496, 7312459672336] |