A300761 - cp's OEIS frontend

A300761 Number of non-equivalent ways (mod D_2) to select 4 points from n equidistant points on a straight line so that no selected point is equally distant from two other selected points.

n	a(n)
4	0
5	1
6	3
7	6
8	15
9	28
10	53
11	87
12	140
13	210
14	310
15	434
16	600
17	803
18	1061
19	1368
20	1747
21	2190
22	2723
23	3337
24	4060
25	4884
26	5840
27	6916
28	8148
29	9525
30	11083
31	12810
32	14747
33	16880
34	19253
35	21851
36	24720
37	27846
38	31278
39	34998
40	39060
41	43447
42	48213
43	53340
44	58887
45	64834
46	71243
47	78093
48	85448

[0, 1, 3, 6, 15, 28, 53, 87, 140, 210, 310, 434, 600, 803, 1061, 1368, 1747, 2190, 2723, 3337, 4060, 4884, 5840, 6916, 8148, 9525, 11083, 12810, 14747, 16880, 19253, 21851, 24720, 27846, 31278, 34998, 39060, 43447, 48213, 53340, 58887, 64834, 71243, 78093, 85448]

cp's OEIS Frontend

A300761 Number of non-equivalent ways (mod D_2) to select 4 points from n equidistant points on a straight line so that no selected point is equally distant from two other selected points.

Table of values

List of values