A011915 - cp's OEIS frontend

A011915 a(n) = floor(n(n-1)(n-2)*(n-3)/5).

n	a(n)
0	0
1	0
2	0
3	0
4	4
5	24
6	72
7	168
8	336
9	604
10	1008
11	1584
12	2376
13	3432
14	4804
15	6552
16	8736
17	11424
18	14688
19	18604
20	23256
21	28728
22	35112
23	42504
24	51004
25	60720
26	71760
27	84240
28	98280
29	114004
30	131544
31	151032
32	172608
33	196416
34	222604
35	251328
36	282744
37	317016
38	354312

[0, 0, 0, 0, 4, 24, 72, 168, 336, 604, 1008, 1584, 2376, 3432, 4804, 6552, 8736, 11424, 14688, 18604, 23256, 28728, 35112, 42504, 51004, 60720, 71760, 84240, 98280, 114004, 131544, 151032, 172608, 196416, 222604, 251328, 282744, 317016, 354312]

cp's OEIS Frontend

A011915 a(n) = floor(n(n-1)(n-2)*(n-3)/5).

Table of values

List of values

cp's OEIS Frontend

A011915 a(n) = floor(n*(n-1)*(n-2)*(n-3)/5).

Table of values

List of values

A011915 a(n) = floor(n(n-1)(n-2)*(n-3)/5).