A122936 - cp's OEIS frontend

A122936 2-Round numbers: numbers n such that every number less than n and relatively prime to n has at most two prime factors (counting multiplicities).

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
10	12
11	14
12	16
13	18
14	20
15	22
16	24
17	26
18	30
19	36
20	42
21	48
22	54
23	60
24	66
25	72
26	78
27	84
28	90
29	96
30	102
31	108
32	114
33	120
34	150
35	180
36	210
37	240
38	270
39	300
40	330
41	420
42	630
43	840
44	1050
45	1260

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90, 96, 102, 108, 114, 120, 150, 180, 210, 240, 270, 300, 330, 420, 630, 840, 1050, 1260]

cp's OEIS Frontend

A122936 2-Round numbers: numbers n such that every number less than n and relatively prime to n has at most two prime factors (counting multiplicities).

Table of values

List of values