A124570 - cp's OEIS frontend

A124570 Array read by antidiagonals: T(d,k) (k >= 1, d = 1,2,3,4,5,6,...) = smallest semiprime s of k (not necessarily consecutive) semiprimes in arithmetic progression with common difference d, or 0 if there is no such arithmetic progression.

n	a(n)
1	4
2	4
3	4
4	4
5	9
6	4
7	4
8	4
9	33
10	4
11	4
12	6
13	91
14	0
15	4
16	4
17	6
18	115
19	213
20	0
21	4
22	4
23	4
24	6
25	0
26	213
27	0
28	4
29	4
30	4
31	4
32	111
33	0
34	1383
35	0
36	4
37	4
38	14
39	9
40	0
41	201
42	0
43	3091
44	0
45	4
46	4
47	6
48	51
49	203
50	0
51	201
52	0
53	8129
54	0
55	4
56	4
57	6
58	6
59	0
60	1333
61	0
62	481
63	0
64	0
65	0
66	4
67	4
68	4
69	77
70	69
71	0
72	1333
73	0
74	5989
75	0
76	0
77	0
78	4

[4, 4, 4, 4, 9, 4, 4, 4, 33, 4, 4, 6, 91, 0, 4, 4, 6, 115, 213, 0, 4, 4, 4, 6, 0, 213, 0, 4, 4, 4, 4, 111, 0, 1383, 0, 4, 4, 14, 9, 0, 201, 0, 3091, 0, 4, 4, 6, 51, 203, 0, 201, 0, 8129, 0, 4, 4, 6, 6, 0, 1333, 0, 481, 0, 0, 0, 4, 4, 4, 77, 69, 0, 1333, 0, 5989, 0, 0, 0, 4]

cp's OEIS Frontend

A124570 Array read by antidiagonals: T(d,k) (k >= 1, d = 1,2,3,4,5,6,...) = smallest semiprime s of k (not necessarily consecutive) semiprimes in arithmetic progression with common difference d, or 0 if there is no such arithmetic progression.

Table of values

List of values