A376548 - cp's OEIS frontend

A376548 a(1)=1,a(2)=2. Let p be the smallest prime factor of j=a(n-1), then for n>2 a(n) is the smallest novel multiple of Sopfr(j) if j is in A046363, or of p if it is not.

n	a(n)
1	1
2	2
3	4
4	6
5	5
6	10
7	7
8	14
9	8
10	12
11	21
12	3
13	9
14	15
15	18
16	16
17	20
18	22
19	13
20	26
21	24
22	28
23	11
24	33
25	27
26	30
27	32
28	34
29	19
30	38
31	36
32	40
33	44
34	42
35	46
36	48
37	55
38	25
39	35
40	45
41	66
42	50
43	52
44	17
45	51
46	39
47	54
48	77
49	49
50	56
51	65
52	60
53	58
54	31
55	62
56	64
57	68
58	70
59	72
60	74
61	76
62	23
63	69
64	57
65	63
66	78
67	80
68	91

[1, 2, 4, 6, 5, 10, 7, 14, 8, 12, 21, 3, 9, 15, 18, 16, 20, 22, 13, 26, 24, 28, 11, 33, 27, 30, 32, 34, 19, 38, 36, 40, 44, 42, 46, 48, 55, 25, 35, 45, 66, 50, 52, 17, 51, 39, 54, 77, 49, 56, 65, 60, 58, 31, 62, 64, 68, 70, 72, 74, 76, 23, 69, 57, 63, 78, 80, 91]

cp's OEIS Frontend

A376548 a(1)=1,a(2)=2. Let p be the smallest prime factor of j=a(n-1), then for n>2 a(n) is the smallest novel multiple of Sopfr(j) if j is in A046363, or of p if it is not.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	6
5	5
6	10
7	7
8	14
9	8
10	12
11	21
12	3
13	9
14	15
15	18
16	16
17	20
18	22
19	13
20	26
21	24
22	28
23	11
24	33
25	27
26	30
27	32
28	34
29	19
30	38
31	36
32	40
33	44
34	42
35	46
36	48
37	55
38	25
39	35
40	45
41	66
42	50
43	52
44	17
45	51
46	39
47	54
48	77
49	49
50	56
51	65
52	60
53	58
54	31
55	62
56	64
57	68
58	70
59	72
60	74
61	76
62	23
63	69
64	57
65	63
66	78
67	80
68	91

n	a(n)
1	1
2	2
3	4
4	6
5	5
6	10
7	7
8	14
9	8
10	12
11	21
12	3
13	9
14	15
15	18
16	16
17	20
18	22
19	13
20	26
21	24
22	28
23	11
24	33
25	27
26	30
27	32
28	34
29	19
30	38
31	36
32	40
33	44
34	42
35	46
36	48
37	55
38	25
39	35
40	45
41	66
42	50
43	52
44	17
45	51
46	39
47	54
48	77
49	49
50	56
51	65
52	60
53	58
54	31
55	62
56	64
57	68
58	70
59	72
60	74
61	76
62	23
63	69
64	57
65	63
66	78
67	80
68	91

n	a(n)
1	1
2	2
3	4
4	6
5	5
6	10
7	7
8	14
9	8
10	12
11	21
12	3
13	9
14	15
15	18
16	16
17	20
18	22
19	13
20	26
21	24
22	28
23	11
24	33
25	27
26	30
27	32
28	34
29	19
30	38
31	36
32	40
33	44
34	42
35	46
36	48
37	55
38	25
39	35
40	45
41	66
42	50
43	52
44	17
45	51
46	39
47	54
48	77
49	49
50	56
51	65
52	60
53	58
54	31
55	62
56	64
57	68
58	70
59	72
60	74
61	76
62	23
63	69
64	57
65	63
66	78
67	80
68	91