n | a(n) |
---|---|
2 | 4 |
3 | 10 |
4 | 58 |
5 | 58 |
6 | 418 |
7 | 838 |
8 | 2518 |
9 | 2518 |
10 | 27718 |
11 | 27718 |
12 | 360358 |
13 | 360358 |
14 | 360358 |
15 | 720718 |
16 | 12252238 |
17 | 12252238 |
18 | 232792558 |
19 | 232792558 |
20 | 232792558 |
21 | 232792558 |
22 | 5354228878 |
23 | 5354228878 |
24 | 26771144398 |
25 | 26771144398 |
26 | 80313433198 |
27 | 80313433198 |
28 | 2329089562798 |
[4,10,58,58,418,838,2518,2518,27718,27718,360358, 360358,360358,720718,12252238,12252238,232792558, 232792558,232792558,232792558,5354228878, 5354228878,26771144398,26771144398,80313433198, 80313433198,2329089562798] |