A109290 - cp's OEIS frontend

A109290 Composite numbers which are not of the forms p*q -+ 1, where p and q are (not necessarily distinct) primes.

n	a(n)
1	4
2	6
3	12
4	18
5	28
6	30
7	42
8	44
9	46
10	49
11	51
12	55
13	60
14	62
15	65
16	69
17	72
18	74
19	77
20	80
21	82
22	91
23	98
24	99
25	100
26	102
27	104
28	106
29	108
30	111
31	115
32	125
33	126
34	129
35	136
36	138
37	148
38	150
39	152
40	153
41	155
42	161
43	164
44	166
45	169
46	171
47	172
48	174
49	175
50	180
51	183
52	185
53	187
54	189
55	190
56	192
57	194
58	196

[4, 6, 12, 18, 28, 30, 42, 44, 46, 49, 51, 55, 60, 62, 65, 69, 72, 74, 77, 80, 82, 91, 98, 99, 100, 102, 104, 106, 108, 111, 115, 125, 126, 129, 136, 138, 148, 150, 152, 153, 155, 161, 164, 166, 169, 171, 172, 174, 175, 180, 183, 185, 187, 189, 190, 192, 194, 196]

cp's OEIS Frontend

A109290 Composite numbers which are not of the forms p*q -+ 1, where p and q are (not necessarily distinct) primes.

Table of values

List of values

n	a(n)
1	4
2	6
3	12
4	18
5	28
6	30
7	42
8	44
9	46
10	49
11	51
12	55
13	60
14	62
15	65
16	69
17	72
18	74
19	77
20	80
21	82
22	91
23	98
24	99
25	100
26	102
27	104
28	106
29	108
30	111
31	115
32	125
33	126
34	129
35	136
36	138
37	148
38	150
39	152
40	153
41	155
42	161
43	164
44	166
45	169
46	171
47	172
48	174
49	175
50	180
51	183
52	185
53	187
54	189
55	190
56	192
57	194
58	196

n	a(n)
1	4
2	6
3	12
4	18
5	28
6	30
7	42
8	44
9	46
10	49
11	51
12	55
13	60
14	62
15	65
16	69
17	72
18	74
19	77
20	80
21	82
22	91
23	98
24	99
25	100
26	102
27	104
28	106
29	108
30	111
31	115
32	125
33	126
34	129
35	136
36	138
37	148
38	150
39	152
40	153
41	155
42	161
43	164
44	166
45	169
46	171
47	172
48	174
49	175
50	180
51	183
52	185
53	187
54	189
55	190
56	192
57	194
58	196

n	a(n)
1	4
2	6
3	12
4	18
5	28
6	30
7	42
8	44
9	46
10	49
11	51
12	55
13	60
14	62
15	65
16	69
17	72
18	74
19	77
20	80
21	82
22	91
23	98
24	99
25	100
26	102
27	104
28	106
29	108
30	111
31	115
32	125
33	126
34	129
35	136
36	138
37	148
38	150
39	152
40	153
41	155
42	161
43	164
44	166
45	169
46	171
47	172
48	174
49	175
50	180
51	183
52	185
53	187
54	189
55	190
56	192
57	194
58	196