n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 20 |
3 | 80 |
4 | 320 |
5 | 1280 |
6 | 5120 |
7 | 20480 |
8 | 81920 |
9 | 327680 |
10 | 1310720 |
11 | 5242880 |
12 | 20971520 |
13 | 83886080 |
14 | 335544320 |
15 | 1342177280 |
16 | 5368709110 |
17 | 21474836400 |
18 | 85899345450 |
19 | 343597381200 |
20 | 1374389522400 |
21 | 5497558080000 |
22 | 21990232281600 |
23 | 87960928972800 |
[1,5,20,80,320,1280,5120,20480,81920,327680, 1310720,5242880,20971520,83886080,335544320, 1342177280,5368709110,21474836400,85899345450, 343597381200,1374389522400,5497558080000, 21990232281600,87960928972800] |