A373652 - cp's OEIS frontend

A373652 Composite numbers k for which g = gcd(f(i*c), k) = 1 or k for all i in the range 1 <= i <= c, where f(x) = Product_{j=1..c} x+j and c = floor(k^(1/4)).

n	a(n)
1	9
2	15
3	49
4	77
5	169
6	221
7	247
8	323
9	529
10	961
11	1147
12	1271
13	1517
14	1680
15	1849
16	2021
17	2209
18	2279
19	2520
20	2688
21	2880
22	3360
23	3481
24	3599
25	3721
26	3953
27	4032
28	4087
29	4320
30	4480
31	4536
32	4757
33	5040
34	5184
35	5329
36	5670
37	5760
38	5767
39	6048
40	6059
41	6241
42	6480
43	6497
44	6557
45	6720
46	7200

[9, 15, 49, 77, 169, 221, 247, 323, 529, 961, 1147, 1271, 1517, 1680, 1849, 2021, 2209, 2279, 2520, 2688, 2880, 3360, 3481, 3599, 3721, 3953, 4032, 4087, 4320, 4480, 4536, 4757, 5040, 5184, 5329, 5670, 5760, 5767, 6048, 6059, 6241, 6480, 6497, 6557, 6720, 7200]

cp's OEIS Frontend

A373652 Composite numbers k for which g = gcd(f(i*c), k) = 1 or k for all i in the range 1 <= i <= c, where f(x) = Product_{j=1..c} x+j and c = floor(k^(1/4)).

Table of values

List of values