n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 9 |
4 | 36 |
5 | 144 |
6 | 576 |
7 | 2116 |
8 | 8281 |
9 | 31329 |
10 | 121801 |
11 | 467856 |
12 | 1809025 |
13 | 6969600 |
14 | 26884225 |
15 | 103632400 |
16 | 399560121 |
17 | 1540484001 |
18 | 5939322489 |
19 | 22899558276 |
20 | 88289802496 |
21 | 340406901136 |
22 | 1312449766884 |
23 | 5060209759081 |
24 | 19509827162049 |
25 | 75220946346001 |
[1,1,9,36,144,576,2116,8281,31329,121801,467856, 1809025,6969600,26884225,103632400,399560121, 1540484001,5939322489,22899558276,88289802496, 340406901136,1312449766884,5060209759081, 19509827162049,75220946346001] |