A358857 - cp's OEIS frontend

A358857 Least integer k in A031443 such that k*n is also in A031443, or -1 if there is no such k.

n	a(n)
1	2
2	-1
3	49
4	-1
5	2
6	2
7	535
8	-1
9	3843
10	899
11	49
12	197
13	12
14	52
15	9
16	-1
17	9
18	10
19	2
20	9
21	2
22	2
23	35
24	9
25	2
26	2
27	147
28	2
29	2141
30	2095
31	32991
32	-1
33	258055
34	63495
35	3849
36	15367
37	961
38	906
39	226
40	3603
41	56
42	201
43	49
44	197
45	49
46	49
47	50
48	789
49	56
50	56
51	42
52	209
53	50
54	42
55	44
56	41
57	10
58	12
59	10
60	41

[2, -1, 49, -1, 2, 2, 535, -1, 3843, 899, 49, 197, 12, 52, 9, -1, 9, 10, 2, 9, 2, 2, 35, 9, 2, 2, 147, 2, 2141, 2095, 32991, -1, 258055, 63495, 3849, 15367, 961, 906, 226, 3603, 56, 201, 49, 197, 49, 49, 50, 789, 56, 56, 42, 209, 50, 42, 44, 41, 10, 12, 10, 41]

cp's OEIS Frontend

A358857 Least integer k in A031443 such that k*n is also in A031443, or -1 if there is no such k.

Table of values

List of values