A265261 - cp's OEIS frontend

A265261 Smallest n-Knödel number, i.e., smallest composite c > n such that each b < c coprime to c satisfies b^(c-n) == 1 (mod c).

n	a(n)
1	561
2	4
3	9
4	6
5	25
6	8
7	15
8	12
9	21
10	12
11	15
12	16
13	33
14	24
15	21
16	20
17	65
18	24
19	51
20	24
21	45
22	24
23	33
24	32
25	69
26	30
27	39
28	40
29	65
30	36
31	87
32	40
33	45
34	44
35	51
36	40
37	85
38	56
39	57
40	48
41	65
42	72
43	91
44	48
45	63
46	66
47	69
48	60
49	141
50	56
51	63
52	60
53	65
54	72
55	75
56	60
57	63
58	70
59	87
60	72
61	133
62	122
63	93
64	80
65	165

[561, 4, 9, 6, 25, 8, 15, 12, 21, 12, 15, 16, 33, 24, 21, 20, 65, 24, 51, 24, 45, 24, 33, 32, 69, 30, 39, 40, 65, 36, 87, 40, 45, 44, 51, 40, 85, 56, 57, 48, 65, 72, 91, 48, 63, 66, 69, 60, 141, 56, 63, 60, 65, 72, 75, 60, 63, 70, 87, 72, 133, 122, 93, 80, 165]

cp's OEIS Frontend

A265261 Smallest n-Knödel number, i.e., smallest composite c > n such that each b < c coprime to c satisfies b^(c-n) == 1 (mod c).

Table of values

List of values

n	a(n)
1	561
2	4
3	9
4	6
5	25
6	8
7	15
8	12
9	21
10	12
11	15
12	16
13	33
14	24
15	21
16	20
17	65
18	24
19	51
20	24
21	45
22	24
23	33
24	32
25	69
26	30
27	39
28	40
29	65
30	36
31	87
32	40
33	45
34	44
35	51
36	40
37	85
38	56
39	57
40	48
41	65
42	72
43	91
44	48
45	63
46	66
47	69
48	60
49	141
50	56
51	63
52	60
53	65
54	72
55	75
56	60
57	63
58	70
59	87
60	72
61	133
62	122
63	93
64	80
65	165

n	a(n)
1	561
2	4
3	9
4	6
5	25
6	8
7	15
8	12
9	21
10	12
11	15
12	16
13	33
14	24
15	21
16	20
17	65
18	24
19	51
20	24
21	45
22	24
23	33
24	32
25	69
26	30
27	39
28	40
29	65
30	36
31	87
32	40
33	45
34	44
35	51
36	40
37	85
38	56
39	57
40	48
41	65
42	72
43	91
44	48
45	63
46	66
47	69
48	60
49	141
50	56
51	63
52	60
53	65
54	72
55	75
56	60
57	63
58	70
59	87
60	72
61	133
62	122
63	93
64	80
65	165

n	a(n)
1	561
2	4
3	9
4	6
5	25
6	8
7	15
8	12
9	21
10	12
11	15
12	16
13	33
14	24
15	21
16	20
17	65
18	24
19	51
20	24
21	45
22	24
23	33
24	32
25	69
26	30
27	39
28	40
29	65
30	36
31	87
32	40
33	45
34	44
35	51
36	40
37	85
38	56
39	57
40	48
41	65
42	72
43	91
44	48
45	63
46	66
47	69
48	60
49	141
50	56
51	63
52	60
53	65
54	72
55	75
56	60
57	63
58	70
59	87
60	72
61	133
62	122
63	93
64	80
65	165