A011890 - cp's OEIS frontend

A011890 a(n) = floor( n(n-1)(n-2)/8 ).

n	a(n)
0	0
1	0
2	0
3	0
4	3
5	7
6	15
7	26
8	42
9	63
10	90
11	123
12	165
13	214
14	273
15	341
16	420
17	510
18	612
19	726
20	855
21	997
22	1155
23	1328
24	1518
25	1725
26	1950
27	2193
28	2457
29	2740
30	3045
31	3371
32	3720
33	4092
34	4488
35	4908
36	5355
37	5827
38	6327
39	6854
40	7410
41	7995
42	8610
43	9255
44	9933
45	10642
46	11385
47	12161
48	12972
49	13818
50	14700

[0, 0, 0, 0, 3, 7, 15, 26, 42, 63, 90, 123, 165, 214, 273, 341, 420, 510, 612, 726, 855, 997, 1155, 1328, 1518, 1725, 1950, 2193, 2457, 2740, 3045, 3371, 3720, 4092, 4488, 4908, 5355, 5827, 6327, 6854, 7410, 7995, 8610, 9255, 9933, 10642, 11385, 12161, 12972, 13818, 14700]

cp's OEIS Frontend

A011890 a(n) = floor( n(n-1)(n-2)/8 ).

Table of values

List of values

cp's OEIS Frontend

A011890 a(n) = floor( n*(n-1)*(n-2)/8 ).

Table of values

List of values

A011890 a(n) = floor( n(n-1)(n-2)/8 ).