A011925 - cp's OEIS frontend

A011925 a(n) = floor(n(n-1)(n-2)*(n-3)/15).

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	8
6	24
7	56
8	112
9	201
10	336
11	528
12	792
13	1144
14	1601
15	2184
16	2912
17	3808
18	4896
19	6201
20	7752
21	9576
22	11704
23	14168
24	17001
25	20240
26	23920
27	28080
28	32760
29	38001
30	43848
31	50344
32	57536
33	65472
34	74201
35	83776

[0, 0, 0, 0, 1, 8, 24, 56, 112, 201, 336, 528, 792, 1144, 1601, 2184, 2912, 3808, 4896, 6201, 7752, 9576, 11704, 14168, 17001, 20240, 23920, 28080, 32760, 38001, 43848, 50344, 57536, 65472, 74201, 83776]

cp's OEIS Frontend

A011925 a(n) = floor(n(n-1)(n-2)*(n-3)/15).

Table of values

List of values

cp's OEIS Frontend

A011925 a(n) = floor(n*(n-1)*(n-2)*(n-3)/15).

Table of values

List of values

A011925 a(n) = floor(n(n-1)(n-2)*(n-3)/15).