A253567 - cp's OEIS frontend

A253567 Noncomposites together with such composites n = p_i * p_j * p_k * ... * p_u, p_i <= p_j <= p_k <= ... <= p_u, where there is at least one such pair of successive prime factors (when sorted into a nondecreasing order) that the square of the former is larger than the latter: (p_i)^2 > p_j or (p_j)^2 > p_k, etc.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	23
21	24
22	25
23	27
24	28
25	29
26	30
27	31
28	32
29	35
30	36
31	37
32	40
33	41
34	42
35	43
36	44
37	45
38	47
39	48
40	49
41	50
42	52
43	53
44	54
45	55
46	56
47	59
48	60
49	61
50	63
51	64
52	65
53	66
54	67
55	68
56	70
57	71
58	72
59	73
60	75
61	76
62	77
63	78
64	79
65	80
66	81
67	83
68	84
69	85
70	88
71	89
72	90
73	91
74	92
75	95
76	96
77	97
78	98
79	99
80	100

[1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 27, 28, 29, 30, 31, 32, 35, 36, 37, 40, 41, 42, 43, 44, 45, 47, 48, 49, 50, 52, 53, 54, 55, 56, 59, 60, 61, 63, 64, 65, 66, 67, 68, 70, 71, 72, 73, 75, 76, 77, 78, 79, 80, 81, 83, 84, 85, 88, 89, 90, 91, 92, 95, 96, 97, 98, 99, 100]

cp's OEIS Frontend

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	23
21	24
22	25
23	27
24	28
25	29
26	30
27	31
28	32
29	35
30	36
31	37
32	40
33	41
34	42
35	43
36	44
37	45
38	47
39	48
40	49
41	50
42	52
43	53
44	54
45	55
46	56
47	59
48	60
49	61
50	63
51	64
52	65
53	66
54	67
55	68
56	70
57	71
58	72
59	73
60	75
61	76
62	77
63	78
64	79
65	80
66	81
67	83
68	84
69	85
70	88
71	89
72	90
73	91
74	92
75	95
76	96
77	97
78	98
79	99
80	100

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	23
21	24
22	25
23	27
24	28
25	29
26	30
27	31
28	32
29	35
30	36
31	37
32	40
33	41
34	42
35	43
36	44
37	45
38	47
39	48
40	49
41	50
42	52
43	53
44	54
45	55
46	56
47	59
48	60
49	61
50	63
51	64
52	65
53	66
54	67
55	68
56	70
57	71
58	72
59	73
60	75
61	76
62	77
63	78
64	79
65	80
66	81
67	83
68	84
69	85
70	88
71	89
72	90
73	91
74	92
75	95
76	96
77	97
78	98
79	99
80	100

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	15
14	16
15	17
16	18
17	19
18	20
19	21
20	23
21	24
22	25
23	27
24	28
25	29
26	30
27	31
28	32
29	35
30	36
31	37
32	40
33	41
34	42
35	43
36	44
37	45
38	47
39	48
40	49
41	50
42	52
43	53
44	54
45	55
46	56
47	59
48	60
49	61
50	63
51	64
52	65
53	66
54	67
55	68
56	70
57	71
58	72
59	73
60	75
61	76
62	77
63	78
64	79
65	80
66	81
67	83
68	84
69	85
70	88
71	89
72	90
73	91
74	92
75	95
76	96
77	97
78	98
79	99
80	100