A117561 - cp's OEIS frontend

A117561 a(n) = floor(n(n^3-n-3)/(2(n-1))).

n	a(n)
2	3
3	15
4	38
5	73
6	124
7	194
8	286
9	403
10	548
11	724
12	934
13	1181
14	1468
15	1798
16	2174
17	2599
18	3076
19	3608
20	4198
21	4849
22	5564
23	6346
24	7198
25	8123
26	9124
27	10204
28	11366
29	12613
30	13948
31	15374
32	16894
33	18511
34	20228
35	22048
36	23974
37	26009
38	28156
39	30418
40	32798
41	35299
42	37924

[3, 15, 38, 73, 124, 194, 286, 403, 548, 724, 934, 1181, 1468, 1798, 2174, 2599, 3076, 3608, 4198, 4849, 5564, 6346, 7198, 8123, 9124, 10204, 11366, 12613, 13948, 15374, 16894, 18511, 20228, 22048, 23974, 26009, 28156, 30418, 32798, 35299, 37924]

cp's OEIS Frontend

A117561 a(n) = floor(n(n^3-n-3)/(2(n-1))).

Table of values

List of values

cp's OEIS Frontend

A117561 a(n) = floor(n*(n^3-n-3)/(2*(n-1))).

Table of values

List of values

A117561 a(n) = floor(n(n^3-n-3)/(2(n-1))).