n | a(n) |
---|---|
1 | 4 |
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 | 5368709120 |
17 | 21474836480 |
18 | 85899345920 |
19 | 343597383680 |
20 | 1374389534720 |
21 | 5497558138880 |
22 | 21990232555520 |
23 | 87960930222080 |
24 | 351843720888320 |
25 | 1407374883553280 |
[4,20,80,320,1280,5120,20480,81920,327680,1310720, 5242880,20971520,83886080,335544320,1342177280, 5368709120,21474836480,85899345920,343597383680, 1374389534720,5497558138880,21990232555520, 87960930222080,351843720888320,1407374883553280] |