A257874 - cp's OEIS frontend

A257874 Numbers n such that the largest prime divisor of n^4 + n^2 + 1 is equal to the largest prime divisor of (n+1)^4 + (n+1)^2 + 1.

n	a(n)
1	3
2	6
3	8
4	10
5	12
6	15
7	17
8	21
9	24
10	27
11	31
12	33
13	38
14	41
15	43
16	48
17	50
18	52
19	54
20	57
21	59
22	62
23	66
24	69
25	71
26	73
27	75
28	78
29	80
30	82
31	85
32	90
33	93
34	95
35	97
36	99
37	101
38	103
39	105
40	111
41	115
42	117
43	119
44	124
45	127
46	131
47	133
48	136
49	138
50	141
51	143
52	145
53	147
54	150
55	153
56	155
57	157
58	162
59	164
60	168

[3, 6, 8, 10, 12, 15, 17, 21, 24, 27, 31, 33, 38, 41, 43, 48, 50, 52, 54, 57, 59, 62, 66, 69, 71, 73, 75, 78, 80, 82, 85, 90, 93, 95, 97, 99, 101, 103, 105, 111, 115, 117, 119, 124, 127, 131, 133, 136, 138, 141, 143, 145, 147, 150, 153, 155, 157, 162, 164, 168]

cp's OEIS Frontend

A257874 Numbers n such that the largest prime divisor of n^4 + n^2 + 1 is equal to the largest prime divisor of (n+1)^4 + (n+1)^2 + 1.

Table of values

List of values

n	a(n)
1	3
2	6
3	8
4	10
5	12
6	15
7	17
8	21
9	24
10	27
11	31
12	33
13	38
14	41
15	43
16	48
17	50
18	52
19	54
20	57
21	59
22	62
23	66
24	69
25	71
26	73
27	75
28	78
29	80
30	82
31	85
32	90
33	93
34	95
35	97
36	99
37	101
38	103
39	105
40	111
41	115
42	117
43	119
44	124
45	127
46	131
47	133
48	136
49	138
50	141
51	143
52	145
53	147
54	150
55	153
56	155
57	157
58	162
59	164
60	168

n	a(n)
1	3
2	6
3	8
4	10
5	12
6	15
7	17
8	21
9	24
10	27
11	31
12	33
13	38
14	41
15	43
16	48
17	50
18	52
19	54
20	57
21	59
22	62
23	66
24	69
25	71
26	73
27	75
28	78
29	80
30	82
31	85
32	90
33	93
34	95
35	97
36	99
37	101
38	103
39	105
40	111
41	115
42	117
43	119
44	124
45	127
46	131
47	133
48	136
49	138
50	141
51	143
52	145
53	147
54	150
55	153
56	155
57	157
58	162
59	164
60	168

n	a(n)
1	3
2	6
3	8
4	10
5	12
6	15
7	17
8	21
9	24
10	27
11	31
12	33
13	38
14	41
15	43
16	48
17	50
18	52
19	54
20	57
21	59
22	62
23	66
24	69
25	71
26	73
27	75
28	78
29	80
30	82
31	85
32	90
33	93
34	95
35	97
36	99
37	101
38	103
39	105
40	111
41	115
42	117
43	119
44	124
45	127
46	131
47	133
48	136
49	138
50	141
51	143
52	145
53	147
54	150
55	153
56	155
57	157
58	162
59	164
60	168