n | a(n) |
---|---|
5 | 1 |
6 | 15 |
7 | 245 |
8 | 3990 |
9 | 70707 |
10 | 1381695 |
11 | 30015205 |
12 | 724574235 |
13 | 19353600409 |
14 | 568456078190 |
15 | 18238727824135 |
16 | 635132015698180 |
17 | 23864603640853943 |
18 | 962474842863397305 |
19 | 41472195692307932196 |
20 | 1901422216588179732355 |
21 | 92422276780875117660486 |
22 | 4747285506511684927770980 |
[1,15,245,3990,70707,1381695,30015205,724574235, 19353600409,568456078190,18238727824135, 635132015698180,23864603640853943, 962474842863397305,41472195692307932196, 1901422216588179732355,92422276780875117660486, 4747285506511684927770980] |