A229609 - cp's OEIS frontend

A229609 Array: 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 < 3*p.

n	a(n)
1	2
2	5
3	3
4	13
5	7
6	11
7	37
8	19
9	31
10	17
11	109
12	53
13	89
14	47
15	23
16	317
17	157
18	263
19	139
20	67
21	29
22	947
23	467
24	787
25	409
26	199
27	83
28	41
29	2837
30	1399
31	2357
32	1223
33	593
34	241
35	113
36	43
37	8501
38	4177
39	7069
40	3659
41	1777
42	719
43	337
44	127
45	59
46	25471
47	12527
48	21193
49	10973
50	5323
51	2153
52	1009

[2, 5, 3, 13, 7, 11, 37, 19, 31, 17, 109, 53, 89, 47, 23, 317, 157, 263, 139, 67, 29, 947, 467, 787, 409, 199, 83, 41, 2837, 1399, 2357, 1223, 593, 241, 113, 43, 8501, 4177, 7069, 3659, 1777, 719, 337, 127, 59, 25471, 12527, 21193, 10973, 5323, 2153, 1009]

cp's OEIS Frontend

A229609 Array: 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 < 3*p.

Table of values

List of values