A284091 - cp's OEIS frontend

A284091 Indices n where prime(n) + 2prime(n+1) and 2prime(n) + prime(n+1) have the same number of prime divisors counted with multiplicity.

n	a(n)
1	2
2	3
3	6
4	11
5	12
6	15
7	16
8	17
9	19
10	20
11	23
12	25
13	27
14	30
15	33
16	34
17	37
18	38
19	47
20	48
21	51
22	53
23	56
24	57
25	58
26	60
27	66
28	68
29	75
30	76
31	77
32	78
33	79
34	86
35	87
36	89
37	90
38	93
39	94
40	99
41	100
42	101
43	107
44	110
45	123
46	124
47	128
48	133
49	137
50	138
51	139
52	141
53	143
54	145
55	147
56	151

[2, 3, 6, 11, 12, 15, 16, 17, 19, 20, 23, 25, 27, 30, 33, 34, 37, 38, 47, 48, 51, 53, 56, 57, 58, 60, 66, 68, 75, 76, 77, 78, 79, 86, 87, 89, 90, 93, 94, 99, 100, 101, 107, 110, 123, 124, 128, 133, 137, 138, 139, 141, 143, 145, 147, 151]

cp's OEIS Frontend

A284091 Indices n where prime(n) + 2prime(n+1) and 2prime(n) + prime(n+1) have the same number of prime divisors counted with multiplicity.

Table of values

List of values

n	a(n)
1	2
2	3
3	6
4	11
5	12
6	15
7	16
8	17
9	19
10	20
11	23
12	25
13	27
14	30
15	33
16	34
17	37
18	38
19	47
20	48
21	51
22	53
23	56
24	57
25	58
26	60
27	66
28	68
29	75
30	76
31	77
32	78
33	79
34	86
35	87
36	89
37	90
38	93
39	94
40	99
41	100
42	101
43	107
44	110
45	123
46	124
47	128
48	133
49	137
50	138
51	139
52	141
53	143
54	145
55	147
56	151

n	a(n)
1	2
2	3
3	6
4	11
5	12
6	15
7	16
8	17
9	19
10	20
11	23
12	25
13	27
14	30
15	33
16	34
17	37
18	38
19	47
20	48
21	51
22	53
23	56
24	57
25	58
26	60
27	66
28	68
29	75
30	76
31	77
32	78
33	79
34	86
35	87
36	89
37	90
38	93
39	94
40	99
41	100
42	101
43	107
44	110
45	123
46	124
47	128
48	133
49	137
50	138
51	139
52	141
53	143
54	145
55	147
56	151

cp's OEIS Frontend

A284091 Indices n where prime(n) + 2*prime(n+1) and 2*prime(n) + prime(n+1) have the same number of prime divisors counted with multiplicity.

Table of values

List of values

A284091 Indices n where prime(n) + 2prime(n+1) and 2prime(n) + prime(n+1) have the same number of prime divisors counted with multiplicity.

n	a(n)
1	2
2	3
3	6
4	11
5	12
6	15
7	16
8	17
9	19
10	20
11	23
12	25
13	27
14	30
15	33
16	34
17	37
18	38
19	47
20	48
21	51
22	53
23	56
24	57
25	58
26	60
27	66
28	68
29	75
30	76
31	77
32	78
33	79
34	86
35	87
36	89
37	90
38	93
39	94
40	99
41	100
42	101
43	107
44	110
45	123
46	124
47	128
48	133
49	137
50	138
51	139
52	141
53	143
54	145
55	147
56	151