A343327 - cp's OEIS frontend

A343327 Start with a(1)=1; thereafter a(n+1) = Sum_{k=1..n such that d(a(k)) = d(a(n))} d(a(k)) where d = A000005.

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	3
7	6
8	4
9	6
10	8
11	12
12	6
13	16
14	5
15	8
16	20
17	12
18	18
19	24
20	8
21	24
22	16
23	10
24	28
25	30
26	24
27	32
28	36
29	9
30	9
31	12
32	42
33	40
34	48
35	10
36	32
37	48
38	20
39	54
40	56
41	64
42	7
43	10
44	36
45	18
46	60
47	12
48	66
49	72
50	24
51	80
52	30
53	88
54	96
55	36
56	27
57	40
58	104
59	112
60	40
61	120
62	16
63	15
64	44
65	72
66	48
67	50
68	78
69	128
70	136
71	144
72	15

[1, 1, 2, 2, 4, 3, 6, 4, 6, 8, 12, 6, 16, 5, 8, 20, 12, 18, 24, 8, 24, 16, 10, 28, 30, 24, 32, 36, 9, 9, 12, 42, 40, 48, 10, 32, 48, 20, 54, 56, 64, 7, 10, 36, 18, 60, 12, 66, 72, 24, 80, 30, 88, 96, 36, 27, 40, 104, 112, 40, 120, 16, 15, 44, 72, 48, 50, 78, 128, 136, 144, 15]

cp's OEIS Frontend

A343327 Start with a(1)=1; thereafter a(n+1) = Sum_{k=1..n such that d(a(k)) = d(a(n))} d(a(k)) where d = A000005.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	3
7	6
8	4
9	6
10	8
11	12
12	6
13	16
14	5
15	8
16	20
17	12
18	18
19	24
20	8
21	24
22	16
23	10
24	28
25	30
26	24
27	32
28	36
29	9
30	9
31	12
32	42
33	40
34	48
35	10
36	32
37	48
38	20
39	54
40	56
41	64
42	7
43	10
44	36
45	18
46	60
47	12
48	66
49	72
50	24
51	80
52	30
53	88
54	96
55	36
56	27
57	40
58	104
59	112
60	40
61	120
62	16
63	15
64	44
65	72
66	48
67	50
68	78
69	128
70	136
71	144
72	15

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	3
7	6
8	4
9	6
10	8
11	12
12	6
13	16
14	5
15	8
16	20
17	12
18	18
19	24
20	8
21	24
22	16
23	10
24	28
25	30
26	24
27	32
28	36
29	9
30	9
31	12
32	42
33	40
34	48
35	10
36	32
37	48
38	20
39	54
40	56
41	64
42	7
43	10
44	36
45	18
46	60
47	12
48	66
49	72
50	24
51	80
52	30
53	88
54	96
55	36
56	27
57	40
58	104
59	112
60	40
61	120
62	16
63	15
64	44
65	72
66	48
67	50
68	78
69	128
70	136
71	144
72	15

n	a(n)
1	1
2	1
3	2
4	2
5	4
6	3
7	6
8	4
9	6
10	8
11	12
12	6
13	16
14	5
15	8
16	20
17	12
18	18
19	24
20	8
21	24
22	16
23	10
24	28
25	30
26	24
27	32
28	36
29	9
30	9
31	12
32	42
33	40
34	48
35	10
36	32
37	48
38	20
39	54
40	56
41	64
42	7
43	10
44	36
45	18
46	60
47	12
48	66
49	72
50	24
51	80
52	30
53	88
54	96
55	36
56	27
57	40
58	104
59	112
60	40
61	120
62	16
63	15
64	44
65	72
66	48
67	50
68	78
69	128
70	136
71	144
72	15