A011887 - cp's OEIS frontend

A011887 a(n) = floor( n(n-1)(n-2)/5 ).

n	a(n)
0	0
1	0
2	0
3	1
4	4
5	12
6	24
7	42
8	67
9	100
10	144
11	198
12	264
13	343
14	436
15	546
16	672
17	816
18	979
19	1162
20	1368
21	1596
22	1848
23	2125
24	2428
25	2760
26	3120
27	3510
28	3931
29	4384
30	4872
31	5394
32	5952
33	6547
34	7180
35	7854
36	8568
37	9324
38	10123
39	10966

[0, 0, 0, 1, 4, 12, 24, 42, 67, 100, 144, 198, 264, 343, 436, 546, 672, 816, 979, 1162, 1368, 1596, 1848, 2125, 2428, 2760, 3120, 3510, 3931, 4384, 4872, 5394, 5952, 6547, 7180, 7854, 8568, 9324, 10123, 10966]

cp's OEIS Frontend

A011887 a(n) = floor( n(n-1)(n-2)/5 ).

Table of values

List of values

cp's OEIS Frontend

A011887 a(n) = floor( n*(n-1)*(n-2)/5 ).

Table of values

List of values

A011887 a(n) = floor( n(n-1)(n-2)/5 ).