A052747 - cp's OEIS frontend

A052747 a(0) = a(1) = a(2) = 0; a(n) = n!/(n-2) for n > 2.

n	a(n)
0	0
1	0
2	0
3	6
4	12
5	40
6	180
7	1008
8	6720
9	51840
10	453600
11	4435200
12	47900160
13	566092800
14	7264857600
15	100590336000
16	1494484992000
17	23712495206400
18	400148356608000
19	7155594141696000
20	135161222676480000
21	2688996956405760000
22	56200036388880384000
23	1231048416137379840000

[0, 0, 0, 6, 12, 40, 180, 1008, 6720, 51840, 453600, 4435200, 47900160, 566092800, 7264857600, 100590336000, 1494484992000, 23712495206400, 400148356608000, 7155594141696000, 135161222676480000, 2688996956405760000, 56200036388880384000, 1231048416137379840000]

cp's OEIS Frontend

A052747 a(0) = a(1) = a(2) = 0; a(n) = n!/(n-2) for n > 2.

Table of values

List of values