A178099 - cp's OEIS frontend

A178099 Numbers k such that exactly three d in the range d <= k/2 exist which divide binomial(k-d-1,d-1) and which are not coprime to k.

n	a(n)
1	32
2	38
3	45
4	51
5	52
6	56
7	57
8	63
9	69
10	87
11	145
12	209
13	713
14	1073
15	3233
16	3953
17	5609
18	8633
19	11009
20	18209
21	23393
22	31313
23	38009
24	56153
25	71273
26	74513
27	131753
28	154433
29	164009
30	189209
31	205193
32	233273
33	245009
34	321473
35	328313
36	356393
37	363593
38	431633
39	471953
40	497009

[32, 38, 45, 51, 52, 56, 57, 63, 69, 87, 145, 209, 713, 1073, 3233, 3953, 5609, 8633, 11009, 18209, 23393, 31313, 38009, 56153, 71273, 74513, 131753, 154433, 164009, 189209, 205193, 233273, 245009, 321473, 328313, 356393, 363593, 431633, 471953, 497009]

cp's OEIS Frontend

A178099 Numbers k such that exactly three d in the range d <= k/2 exist which divide binomial(k-d-1,d-1) and which are not coprime to k.

Table of values

List of values