A087112 - cp's OEIS frontend

A087112 Triangle in which the n-th row contains n distinct semiprimes not listed previously with all prime factors from among the first n primes.

n	a(n)
1	4
2	6
3	9
4	10
5	15
6	25
7	14
8	21
9	35
10	49
11	22
12	33
13	55
14	77
15	121
16	26
17	39
18	65
19	91
20	143
21	169
22	34
23	51
24	85
25	119
26	187
27	221
28	289
29	38
30	57
31	95
32	133
33	209
34	247
35	323
36	361
37	46
38	69
39	115
40	161
41	253
42	299
43	391
44	437
45	529
46	58
47	87
48	145
49	203
50	319
51	377
52	493
53	551
54	667
55	841
56	62
57	93
58	155
59	217
60	341
61	403
62	527
63	589
64	713
65	899
66	961

[4, 6, 9, 10, 15, 25, 14, 21, 35, 49, 22, 33, 55, 77, 121, 26, 39, 65, 91, 143, 169, 34, 51, 85, 119, 187, 221, 289, 38, 57, 95, 133, 209, 247, 323, 361, 46, 69, 115, 161, 253, 299, 391, 437, 529, 58, 87, 145, 203, 319, 377, 493, 551, 667, 841, 62, 93, 155, 217, 341, 403, 527, 589, 713, 899, 961]

cp's OEIS Frontend

A087112 Triangle in which the n-th row contains n distinct semiprimes not listed previously with all prime factors from among the first n primes.

Table of values

List of values

n	a(n)
1	4
2	6
3	9
4	10
5	15
6	25
7	14
8	21
9	35
10	49
11	22
12	33
13	55
14	77
15	121
16	26
17	39
18	65
19	91
20	143
21	169
22	34
23	51
24	85
25	119
26	187
27	221
28	289
29	38
30	57
31	95
32	133
33	209
34	247
35	323
36	361
37	46
38	69
39	115
40	161
41	253
42	299
43	391
44	437
45	529
46	58
47	87
48	145
49	203
50	319
51	377
52	493
53	551
54	667
55	841
56	62
57	93
58	155
59	217
60	341
61	403
62	527
63	589
64	713
65	899
66	961

n	a(n)
1	4
2	6
3	9
4	10
5	15
6	25
7	14
8	21
9	35
10	49
11	22
12	33
13	55
14	77
15	121
16	26
17	39
18	65
19	91
20	143
21	169
22	34
23	51
24	85
25	119
26	187
27	221
28	289
29	38
30	57
31	95
32	133
33	209
34	247
35	323
36	361
37	46
38	69
39	115
40	161
41	253
42	299
43	391
44	437
45	529
46	58
47	87
48	145
49	203
50	319
51	377
52	493
53	551
54	667
55	841
56	62
57	93
58	155
59	217
60	341
61	403
62	527
63	589
64	713
65	899
66	961

n	a(n)
1	4
2	6
3	9
4	10
5	15
6	25
7	14
8	21
9	35
10	49
11	22
12	33
13	55
14	77
15	121
16	26
17	39
18	65
19	91
20	143
21	169
22	34
23	51
24	85
25	119
26	187
27	221
28	289
29	38
30	57
31	95
32	133
33	209
34	247
35	323
36	361
37	46
38	69
39	115
40	161
41	253
42	299
43	391
44	437
45	529
46	58
47	87
48	145
49	203
50	319
51	377
52	493
53	551
54	667
55	841
56	62
57	93
58	155
59	217
60	341
61	403
62	527
63	589
64	713
65	899
66	961