A178098 - cp's OEIS frontend

A178098 Numbers n such that exactly two positive d in the range d <= n/2 exist which divide binomial(n-d-1, d-1) and which are not coprime to n.

n	a(n)
1	26
2	30
3	36
4	40
5	42
6	44
7	91
8	95
9	115
10	119
11	133
12	161
13	187
14	247
15	391
16	667
17	1147
18	1591
19	1927
20	2491
21	3127
22	4087
23	4891
24	5767
25	7387
26	9991
27	10807
28	11227
29	12091
30	17947
31	23707
32	25591
33	28891
34	30967
35	37627
36	38407
37	51067
38	52891
39	55687
40	64507
41	67591
42	70747
43	75067
44	78391

[26, 30, 36, 40, 42, 44, 91, 95, 115, 119, 133, 161, 187, 247, 391, 667, 1147, 1591, 1927, 2491, 3127, 4087, 4891, 5767, 7387, 9991, 10807, 11227, 12091, 17947, 23707, 25591, 28891, 30967, 37627, 38407, 51067, 52891, 55687, 64507, 67591, 70747, 75067, 78391]

cp's OEIS Frontend

A178098 Numbers n such that exactly two positive d in the range d <= n/2 exist which divide binomial(n-d-1, d-1) and which are not coprime to n.

Table of values

List of values