A335567 - cp's OEIS frontend

A335567 Number of distinct positive integer pairs (s,t) such that s <= t < n where neither s nor t divides n.

n	a(n)
1	0
2	0
3	1
4	1
5	6
6	3
7	15
8	10
9	21
10	21
11	45
12	21
13	66
14	55
15	66
16	66
17	120
18	78
19	153
20	105
21	153
22	171
23	231
24	136
25	253
26	253
27	276
28	253
29	378
30	253
31	435
32	351
33	435
34	465
35	496
36	378
37	630
38	595
39	630
40	528
41	780
42	595
43	861
44	741
45	780
46	903
47	1035
48	741
49	1081
50	990
51	1128
52	1081
53	1326
54	1081
55	1326
56	1176
57	1431

[0, 0, 1, 1, 6, 3, 15, 10, 21, 21, 45, 21, 66, 55, 66, 66, 120, 78, 153, 105, 153, 171, 231, 136, 253, 253, 276, 253, 378, 253, 435, 351, 435, 465, 496, 378, 630, 595, 630, 528, 780, 595, 861, 741, 780, 903, 1035, 741, 1081, 990, 1128, 1081, 1326, 1081, 1326, 1176, 1431]

cp's OEIS Frontend

A335567 Number of distinct positive integer pairs (s,t) such that s <= t < n where neither s nor t divides n.

Table of values

List of values