A093614 - cp's OEIS frontend

A093614 Numbers n such that F_n(x) and F_n(1-x) have a common factor mod 2, with F_n(x) = U(n-1,x/2) the monic Chebyshev polynomials of second kind.

n	a(n)
1	5
2	6
3	10
4	12
5	15
6	17
7	18
8	20
9	24
10	25
11	30
12	31
13	33
14	34
15	35
16	36
17	40
18	42
19	45
20	48
21	50
22	51
23	54
24	55
25	60
26	62
27	63
28	65
29	66
30	68
31	70
32	72
33	75
34	78
35	80
36	84
37	85
38	90
39	93
40	95
41	96
42	99
43	100
44	102
45	105
46	108
47	110
48	114
49	115
50	119
51	120
52	124
53	125
54	126
55	127
56	129
57	130
58	132
59	135
60	136
61	138

[5, 6, 10, 12, 15, 17, 18, 20, 24, 25, 30, 31, 33, 34, 35, 36, 40, 42, 45, 48, 50, 51, 54, 55, 60, 62, 63, 65, 66, 68, 70, 72, 75, 78, 80, 84, 85, 90, 93, 95, 96, 99, 100, 102, 105, 108, 110, 114, 115, 119, 120, 124, 125, 126, 127, 129, 130, 132, 135, 136, 138]

cp's OEIS Frontend

A093614 Numbers n such that F_n(x) and F_n(1-x) have a common factor mod 2, with F_n(x) = U(n-1,x/2) the monic Chebyshev polynomials of second kind.

Table of values

List of values

n	a(n)
1	5
2	6
3	10
4	12
5	15
6	17
7	18
8	20
9	24
10	25
11	30
12	31
13	33
14	34
15	35
16	36
17	40
18	42
19	45
20	48
21	50
22	51
23	54
24	55
25	60
26	62
27	63
28	65
29	66
30	68
31	70
32	72
33	75
34	78
35	80
36	84
37	85
38	90
39	93
40	95
41	96
42	99
43	100
44	102
45	105
46	108
47	110
48	114
49	115
50	119
51	120
52	124
53	125
54	126
55	127
56	129
57	130
58	132
59	135
60	136
61	138

n	a(n)
1	5
2	6
3	10
4	12
5	15
6	17
7	18
8	20
9	24
10	25
11	30
12	31
13	33
14	34
15	35
16	36
17	40
18	42
19	45
20	48
21	50
22	51
23	54
24	55
25	60
26	62
27	63
28	65
29	66
30	68
31	70
32	72
33	75
34	78
35	80
36	84
37	85
38	90
39	93
40	95
41	96
42	99
43	100
44	102
45	105
46	108
47	110
48	114
49	115
50	119
51	120
52	124
53	125
54	126
55	127
56	129
57	130
58	132
59	135
60	136
61	138

n	a(n)
1	5
2	6
3	10
4	12
5	15
6	17
7	18
8	20
9	24
10	25
11	30
12	31
13	33
14	34
15	35
16	36
17	40
18	42
19	45
20	48
21	50
22	51
23	54
24	55
25	60
26	62
27	63
28	65
29	66
30	68
31	70
32	72
33	75
34	78
35	80
36	84
37	85
38	90
39	93
40	95
41	96
42	99
43	100
44	102
45	105
46	108
47	110
48	114
49	115
50	119
51	120
52	124
53	125
54	126
55	127
56	129
57	130
58	132
59	135
60	136
61	138