A350419 - cp's OEIS frontend

A350419 Irregular table read by rows, where row k lists the semiprimes, s*t (s<=t) in increasing order, where s and t are the smaller and larger parts of the partitions of m = 2k+2 into two parts.

n	a(n)
1	4
2	9
3	15
4	9
5	21
6	25
7	35
8	33
9	49
10	15
11	39
12	55
13	65
14	77
15	51
16	91
17	21
18	57
19	85
20	121
21	95
22	119
23	143
24	25
25	69
26	133
27	169
28	115
29	187
30	161
31	209
32	221
33	87
34	247
35	33
36	93
37	145
38	253
39	289
40	35
41	155
42	203
43	299
44	323
45	217
46	361
47	39
48	111
49	319
50	391
51	185
52	341
53	377
54	437
55	123
56	259
57	403
58	129
59	205
60	493
61	529

[4, 9, 15, 9, 21, 25, 35, 33, 49, 15, 39, 55, 65, 77, 51, 91, 21, 57, 85, 121, 95, 119, 143, 25, 69, 133, 169, 115, 187, 161, 209, 221, 87, 247, 33, 93, 145, 253, 289, 35, 155, 203, 299, 323, 217, 361, 39, 111, 319, 391, 185, 341, 377, 437, 123, 259, 403, 129, 205, 493, 529]

cp's OEIS Frontend

A350419 Irregular table read by rows, where row k lists the semiprimes, s*t (s<=t) in increasing order, where s and t are the smaller and larger parts of the partitions of m = 2k+2 into two parts.

Table of values

List of values

n	a(n)
1	4
2	9
3	15
4	9
5	21
6	25
7	35
8	33
9	49
10	15
11	39
12	55
13	65
14	77
15	51
16	91
17	21
18	57
19	85
20	121
21	95
22	119
23	143
24	25
25	69
26	133
27	169
28	115
29	187
30	161
31	209
32	221
33	87
34	247
35	33
36	93
37	145
38	253
39	289
40	35
41	155
42	203
43	299
44	323
45	217
46	361
47	39
48	111
49	319
50	391
51	185
52	341
53	377
54	437
55	123
56	259
57	403
58	129
59	205
60	493
61	529

n	a(n)
1	4
2	9
3	15
4	9
5	21
6	25
7	35
8	33
9	49
10	15
11	39
12	55
13	65
14	77
15	51
16	91
17	21
18	57
19	85
20	121
21	95
22	119
23	143
24	25
25	69
26	133
27	169
28	115
29	187
30	161
31	209
32	221
33	87
34	247
35	33
36	93
37	145
38	253
39	289
40	35
41	155
42	203
43	299
44	323
45	217
46	361
47	39
48	111
49	319
50	391
51	185
52	341
53	377
54	437
55	123
56	259
57	403
58	129
59	205
60	493
61	529

n	a(n)
1	4
2	9
3	15
4	9
5	21
6	25
7	35
8	33
9	49
10	15
11	39
12	55
13	65
14	77
15	51
16	91
17	21
18	57
19	85
20	121
21	95
22	119
23	143
24	25
25	69
26	133
27	169
28	115
29	187
30	161
31	209
32	221
33	87
34	247
35	33
36	93
37	145
38	253
39	289
40	35
41	155
42	203
43	299
44	323
45	217
46	361
47	39
48	111
49	319
50	391
51	185
52	341
53	377
54	437
55	123
56	259
57	403
58	129
59	205
60	493
61	529