A178484 - cp's OEIS frontend

A178484 For n=1,2,... list all numbers not occurring earlier which can be written as a product of the first n primes raised to some nonnegative power less than n.

n	a(n)
1	1
2	2
3	3
4	6
5	4
6	5
7	9
8	10
9	12
10	15
11	18
12	20
13	25
14	30
15	36
16	45
17	50
18	60
19	75
20	90
21	100
22	150
23	180
24	225
25	300
26	450
27	900
28	7
29	8
30	14
31	21
32	24
33	27
34	28
35	35
36	40
37	42
38	49
39	54
40	56
41	63
42	70
43	72
44	84
45	98
46	105
47	108
48	120
49	125
50	126
51	135
52	140
53	147
54	168
55	175
56	189
57	196
58	200
59	210
60	216
61	245
62	250
63	252

[1, 2, 3, 6, 4, 5, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 7, 8, 14, 21, 24, 27, 28, 35, 40, 42, 49, 54, 56, 63, 70, 72, 84, 98, 105, 108, 120, 125, 126, 135, 140, 147, 168, 175, 189, 196, 200, 210, 216, 245, 250, 252]

cp's OEIS Frontend

A178484 For n=1,2,... list all numbers not occurring earlier which can be written as a product of the first n primes raised to some nonnegative power less than n.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	6
5	4
6	5
7	9
8	10
9	12
10	15
11	18
12	20
13	25
14	30
15	36
16	45
17	50
18	60
19	75
20	90
21	100
22	150
23	180
24	225
25	300
26	450
27	900
28	7
29	8
30	14
31	21
32	24
33	27
34	28
35	35
36	40
37	42
38	49
39	54
40	56
41	63
42	70
43	72
44	84
45	98
46	105
47	108
48	120
49	125
50	126
51	135
52	140
53	147
54	168
55	175
56	189
57	196
58	200
59	210
60	216
61	245
62	250
63	252

n	a(n)
1	1
2	2
3	3
4	6
5	4
6	5
7	9
8	10
9	12
10	15
11	18
12	20
13	25
14	30
15	36
16	45
17	50
18	60
19	75
20	90
21	100
22	150
23	180
24	225
25	300
26	450
27	900
28	7
29	8
30	14
31	21
32	24
33	27
34	28
35	35
36	40
37	42
38	49
39	54
40	56
41	63
42	70
43	72
44	84
45	98
46	105
47	108
48	120
49	125
50	126
51	135
52	140
53	147
54	168
55	175
56	189
57	196
58	200
59	210
60	216
61	245
62	250
63	252

n	a(n)
1	1
2	2
3	3
4	6
5	4
6	5
7	9
8	10
9	12
10	15
11	18
12	20
13	25
14	30
15	36
16	45
17	50
18	60
19	75
20	90
21	100
22	150
23	180
24	225
25	300
26	450
27	900
28	7
29	8
30	14
31	21
32	24
33	27
34	28
35	35
36	40
37	42
38	49
39	54
40	56
41	63
42	70
43	72
44	84
45	98
46	105
47	108
48	120
49	125
50	126
51	135
52	140
53	147
54	168
55	175
56	189
57	196
58	200
59	210
60	216
61	245
62	250
63	252