A229607 - cp's OEIS frontend

A229607 Square array read by antidiagonals downwards in which each row starts with the least prime not in a previous row, and each prime p in a row is followed by the greatest prime < 2*p.

n	a(n)
1	2
2	3
3	11
4	5
5	19
6	17
7	7
8	37
9	31
10	29
11	13
12	73
13	61
14	53
15	41
16	23
17	139
18	113
19	103
20	79
21	47
22	43
23	277
24	223
25	199
26	157
27	89
28	59
29	83
30	547
31	443
32	397
33	313
34	173
35	113
36	67
37	163
38	1093
39	883
40	787
41	619
42	337
43	223
44	131
45	71
46	317
47	2179
48	1759
49	1571
50	1237
51	673
52	443
53	257
54	139
55	97
56	631

[2, 3, 11, 5, 19, 17, 7, 37, 31, 29, 13, 73, 61, 53, 41, 23, 139, 113, 103, 79, 47, 43, 277, 223, 199, 157, 89, 59, 83, 547, 443, 397, 313, 173, 113, 67, 163, 1093, 883, 787, 619, 337, 223, 131, 71, 317, 2179, 1759, 1571, 1237, 673, 443, 257, 139, 97, 631]

cp's OEIS Frontend

A229607 Square array read by antidiagonals downwards in which each row starts with the least prime not in a previous row, and each prime p in a row is followed by the greatest prime < 2*p.

Table of values

List of values