n | a(n) |
---|---|
2 | 54 |
3 | 1140 |
4 | 26550 |
5 | 605556 |
6 | 14330736 |
7 | 340860960 |
8 | 8264889270 |
9 | 201651836100 |
10 | 4978317147804 |
11 | 123546256876224 |
12 | 3090501687886704 |
13 | 77632745316063840 |
14 | 1961313438507566400 |
15 | 49717549985405892480 |
16 | 1265749551338006549430 |
17 | 32312920048897640674500 |
18 | 827693426702217868006500 |
[54,1140,26550,605556,14330736,340860960, 8264889270,201651836100,4978317147804, 123546256876224,3090501687886704, 77632745316063840,1961313438507566400, 49717549985405892480,1265749551338006549430, 32312920048897640674500,827693426702217868006500] |