n | a(n) |
---|---|
1 | 4 |
2 | 80 |
3 | 768 |
4 | 6224 |
5 | 46464 |
6 | 330192 |
7 | 2270592 |
8 | 15251152 |
9 | 100647168 |
10 | 655139152 |
11 | 4217820672 |
12 | 26911075152 |
13 | 170416738944 |
14 | 1072338720464 |
15 | 6710943646848 |
16 | 41800542176720 |
17 | 259288295447040 |
18 | 1602497927690832 |
19 | 9871915467776256 |
[4,80,768,6224,46464,330192,2270592,15251152, 100647168,655139152,4217820672,26911075152, 170416738944,1072338720464,6710943646848, 41800542176720,259288295447040,1602497927690832, 9871915467776256] |