A176292 - cp's OEIS frontend

A176292 Numbers k such that the prime factorizations of composite(k) and composite(k+1) have the same number of primes (including multiplicities).

n	a(n)
1	1
2	4
3	7
4	10
5	12
6	15
7	17
8	18
9	21
10	22
11	25
12	28
13	29
14	40
15	47
16	53
17	61
18	62
19	64
20	68
21	69
22	72
23	85
24	87
25	90
26	91
27	93
28	100
29	102
30	106
31	107
32	110
33	112
34	114
35	116
36	120
37	125
38	130
39	131
40	132
41	133
42	136
43	151
44	154
45	155
46	158
47	165
48	166
49	169
50	170
51	179
52	181
53	190
54	191
55	198
56	212
57	221
58	222
59	223

[1, 4, 7, 10, 12, 15, 17, 18, 21, 22, 25, 28, 29, 40, 47, 53, 61, 62, 64, 68, 69, 72, 85, 87, 90, 91, 93, 100, 102, 106, 107, 110, 112, 114, 116, 120, 125, 130, 131, 132, 133, 136, 151, 154, 155, 158, 165, 166, 169, 170, 179, 181, 190, 191, 198, 212, 221, 222, 223]

cp's OEIS Frontend

A176292 Numbers k such that the prime factorizations of composite(k) and composite(k+1) have the same number of primes (including multiplicities).

Table of values

List of values

n	a(n)
1	1
2	4
3	7
4	10
5	12
6	15
7	17
8	18
9	21
10	22
11	25
12	28
13	29
14	40
15	47
16	53
17	61
18	62
19	64
20	68
21	69
22	72
23	85
24	87
25	90
26	91
27	93
28	100
29	102
30	106
31	107
32	110
33	112
34	114
35	116
36	120
37	125
38	130
39	131
40	132
41	133
42	136
43	151
44	154
45	155
46	158
47	165
48	166
49	169
50	170
51	179
52	181
53	190
54	191
55	198
56	212
57	221
58	222
59	223

n	a(n)
1	1
2	4
3	7
4	10
5	12
6	15
7	17
8	18
9	21
10	22
11	25
12	28
13	29
14	40
15	47
16	53
17	61
18	62
19	64
20	68
21	69
22	72
23	85
24	87
25	90
26	91
27	93
28	100
29	102
30	106
31	107
32	110
33	112
34	114
35	116
36	120
37	125
38	130
39	131
40	132
41	133
42	136
43	151
44	154
45	155
46	158
47	165
48	166
49	169
50	170
51	179
52	181
53	190
54	191
55	198
56	212
57	221
58	222
59	223

n	a(n)
1	1
2	4
3	7
4	10
5	12
6	15
7	17
8	18
9	21
10	22
11	25
12	28
13	29
14	40
15	47
16	53
17	61
18	62
19	64
20	68
21	69
22	72
23	85
24	87
25	90
26	91
27	93
28	100
29	102
30	106
31	107
32	110
33	112
34	114
35	116
36	120
37	125
38	130
39	131
40	132
41	133
42	136
43	151
44	154
45	155
46	158
47	165
48	166
49	169
50	170
51	179
52	181
53	190
54	191
55	198
56	212
57	221
58	222
59	223