A253785 - cp's OEIS frontend

A253785 Composite numbers n = prime(i_1) * ... * prime(i_k), prime(i_1) <= prime(i_2) <= ... <= prime(i_k), with at least one pair of successive prime factors (when sorted into monotonic order) where the latter prime factor is greater than the square of the former: prime(i_x)^2 < prime(i_{x+1}), for some x in 1 .. k-1, where k = A001222(n) and i_k = A061395(n).

n	a(n)
1	10
2	14
3	20
4	22
5	26
6	28
7	33
8	34
9	38
10	39
11	40
12	44
13	46
14	50
15	51
16	52
17	56
18	57
19	58
20	62
21	66
22	68
23	69
24	70
25	74
26	76
27	78
28	80
29	82
30	86
31	87
32	88
33	92
34	93
35	94
36	98
37	99
38	100
39	102
40	104
41	106
42	110
43	111
44	112
45	114
46	116
47	117
48	118
49	122
50	123
51	124
52	129
53	130
54	132
55	134
56	136
57	138
58	140
59	141
60	142
61	145
62	146
63	148
64	152
65	153
66	154
67	155
68	156
69	158
70	159
71	160
72	164
73	166
74	170

[10, 14, 20, 22, 26, 28, 33, 34, 38, 39, 40, 44, 46, 50, 51, 52, 56, 57, 58, 62, 66, 68, 69, 70, 74, 76, 78, 80, 82, 86, 87, 88, 92, 93, 94, 98, 99, 100, 102, 104, 106, 110, 111, 112, 114, 116, 117, 118, 122, 123, 124, 129, 130, 132, 134, 136, 138, 140, 141, 142, 145, 146, 148, 152, 153, 154, 155, 156, 158, 159, 160, 164, 166, 170]

cp's OEIS Frontend

Table of values

List of values

n	a(n)
1	10
2	14
3	20
4	22
5	26
6	28
7	33
8	34
9	38
10	39
11	40
12	44
13	46
14	50
15	51
16	52
17	56
18	57
19	58
20	62
21	66
22	68
23	69
24	70
25	74
26	76
27	78
28	80
29	82
30	86
31	87
32	88
33	92
34	93
35	94
36	98
37	99
38	100
39	102
40	104
41	106
42	110
43	111
44	112
45	114
46	116
47	117
48	118
49	122
50	123
51	124
52	129
53	130
54	132
55	134
56	136
57	138
58	140
59	141
60	142
61	145
62	146
63	148
64	152
65	153
66	154
67	155
68	156
69	158
70	159
71	160
72	164
73	166
74	170

n	a(n)
1	10
2	14
3	20
4	22
5	26
6	28
7	33
8	34
9	38
10	39
11	40
12	44
13	46
14	50
15	51
16	52
17	56
18	57
19	58
20	62
21	66
22	68
23	69
24	70
25	74
26	76
27	78
28	80
29	82
30	86
31	87
32	88
33	92
34	93
35	94
36	98
37	99
38	100
39	102
40	104
41	106
42	110
43	111
44	112
45	114
46	116
47	117
48	118
49	122
50	123
51	124
52	129
53	130
54	132
55	134
56	136
57	138
58	140
59	141
60	142
61	145
62	146
63	148
64	152
65	153
66	154
67	155
68	156
69	158
70	159
71	160
72	164
73	166
74	170

n	a(n)
1	10
2	14
3	20
4	22
5	26
6	28
7	33
8	34
9	38
10	39
11	40
12	44
13	46
14	50
15	51
16	52
17	56
18	57
19	58
20	62
21	66
22	68
23	69
24	70
25	74
26	76
27	78
28	80
29	82
30	86
31	87
32	88
33	92
34	93
35	94
36	98
37	99
38	100
39	102
40	104
41	106
42	110
43	111
44	112
45	114
46	116
47	117
48	118
49	122
50	123
51	124
52	129
53	130
54	132
55	134
56	136
57	138
58	140
59	141
60	142
61	145
62	146
63	148
64	152
65	153
66	154
67	155
68	156
69	158
70	159
71	160
72	164
73	166
74	170