A007518 - cp's OEIS frontend

A007518 a(n) = floor(n(n+2)(2*n-1)/8).

n	a(n)
1	0
2	3
3	9
4	21
5	39
6	66
7	102
8	150
9	210
10	285
11	375
12	483
13	609
14	756
15	924
16	1116
17	1332
18	1575
19	1845
20	2145
21	2475
22	2838
23	3234
24	3666
25	4134
26	4641
27	5187
28	5775
29	6405
30	7080
31	7800
32	8568
33	9384
34	10251
35	11169
36	12141
37	13167
38	14250
39	15390
40	16590
41	17850
42	19173
43	20559
44	22011
45	23529
46	25116
47	26772
48	28500
49	30300

[0, 3, 9, 21, 39, 66, 102, 150, 210, 285, 375, 483, 609, 756, 924, 1116, 1332, 1575, 1845, 2145, 2475, 2838, 3234, 3666, 4134, 4641, 5187, 5775, 6405, 7080, 7800, 8568, 9384, 10251, 11169, 12141, 13167, 14250, 15390, 16590, 17850, 19173, 20559, 22011, 23529, 25116, 26772, 28500, 30300]

cp's OEIS Frontend

A007518 a(n) = floor(n(n+2)(2*n-1)/8).

Table of values

List of values

cp's OEIS Frontend

A007518 a(n) = floor(n*(n+2)*(2*n-1)/8).

Table of values

List of values

A007518 a(n) = floor(n(n+2)(2*n-1)/8).