A367096 - cp's OEIS frontend

A367096 Irregular triangle read by rows where row n lists the semiprime divisors of n. Alternatively, row n lists the semiprime divisors of A002808(n).

n	a(n)
1	4
2	6
3	4
4	9
5	10
6	4
7	6
8	14
9	15
10	4
11	6
12	9
13	4
14	10
15	21
16	22
17	4
18	6
19	25
20	26
21	9
22	4
23	14
24	6
25	10
26	15
27	4
28	33
29	34
30	35
31	4
32	6
33	9
34	38
35	39
36	4
37	10
38	6
39	14
40	21
41	4
42	22
43	9
44	15
45	46
46	4
47	6
48	49
49	10
50	25
51	51
52	4
53	26
54	6
55	9
56	55
57	4
58	14
59	57
60	58
61	4
62	6
63	10
64	15
65	62
66	9
67	21
68	4
69	65
70	6
71	22
72	33
73	4
74	34

[4, 6, 4, 9, 10, 4, 6, 14, 15, 4, 6, 9, 4, 10, 21, 22, 4, 6, 25, 26, 9, 4, 14, 6, 10, 15, 4, 33, 34, 35, 4, 6, 9, 38, 39, 4, 10, 6, 14, 21, 4, 22, 9, 15, 46, 4, 6, 49, 10, 25, 51, 4, 26, 6, 9, 55, 4, 14, 57, 58, 4, 6, 10, 15, 62, 9, 21, 4, 65, 6, 22, 33, 4, 34]

cp's OEIS Frontend

A367096 Irregular triangle read by rows where row n lists the semiprime divisors of n. Alternatively, row n lists the semiprime divisors of A002808(n).

Table of values

List of values

n	a(n)
1	4
2	6
3	4
4	9
5	10
6	4
7	6
8	14
9	15
10	4
11	6
12	9
13	4
14	10
15	21
16	22
17	4
18	6
19	25
20	26
21	9
22	4
23	14
24	6
25	10
26	15
27	4
28	33
29	34
30	35
31	4
32	6
33	9
34	38
35	39
36	4
37	10
38	6
39	14
40	21
41	4
42	22
43	9
44	15
45	46
46	4
47	6
48	49
49	10
50	25
51	51
52	4
53	26
54	6
55	9
56	55
57	4
58	14
59	57
60	58
61	4
62	6
63	10
64	15
65	62
66	9
67	21
68	4
69	65
70	6
71	22
72	33
73	4
74	34

n	a(n)
1	4
2	6
3	4
4	9
5	10
6	4
7	6
8	14
9	15
10	4
11	6
12	9
13	4
14	10
15	21
16	22
17	4
18	6
19	25
20	26
21	9
22	4
23	14
24	6
25	10
26	15
27	4
28	33
29	34
30	35
31	4
32	6
33	9
34	38
35	39
36	4
37	10
38	6
39	14
40	21
41	4
42	22
43	9
44	15
45	46
46	4
47	6
48	49
49	10
50	25
51	51
52	4
53	26
54	6
55	9
56	55
57	4
58	14
59	57
60	58
61	4
62	6
63	10
64	15
65	62
66	9
67	21
68	4
69	65
70	6
71	22
72	33
73	4
74	34

n	a(n)
1	4
2	6
3	4
4	9
5	10
6	4
7	6
8	14
9	15
10	4
11	6
12	9
13	4
14	10
15	21
16	22
17	4
18	6
19	25
20	26
21	9
22	4
23	14
24	6
25	10
26	15
27	4
28	33
29	34
30	35
31	4
32	6
33	9
34	38
35	39
36	4
37	10
38	6
39	14
40	21
41	4
42	22
43	9
44	15
45	46
46	4
47	6
48	49
49	10
50	25
51	51
52	4
53	26
54	6
55	9
56	55
57	4
58	14
59	57
60	58
61	4
62	6
63	10
64	15
65	62
66	9
67	21
68	4
69	65
70	6
71	22
72	33
73	4
74	34