A335917 - cp's OEIS frontend

A335917 a(n) is the number of similarity classes of abelian groups with exactly n subgroups (see reference for precise definition of similarity classes).

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	3
7	1
8	5
9	2
10	5
11	2
12	5
13	1
14	6
15	4
16	9
17	2
18	7
19	1
20	11
21	2
22	6
23	3
24	11
25	3
26	8
27	4
28	9
29	3
30	14
31	1
32	16
33	3
34	6
35	4
36	15
37	2
38	8
39	2
40	21
41	2
42	13
43	2
44	13
45	8
46	6
47	2
48	23
49	4

[1, 1, 1, 2, 2, 3, 1, 5, 2, 5, 2, 5, 1, 6, 4, 9, 2, 7, 1, 11, 2, 6, 3, 11, 3, 8, 4, 9, 3, 14, 1, 16, 3, 6, 4, 15, 2, 8, 2, 21, 2, 13, 2, 13, 8, 6, 2, 23, 4]

cp's OEIS Frontend

A335917 a(n) is the number of similarity classes of abelian groups with exactly n subgroups (see reference for precise definition of similarity classes).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	3
7	1
8	5
9	2
10	5
11	2
12	5
13	1
14	6
15	4
16	9
17	2
18	7
19	1
20	11
21	2
22	6
23	3
24	11
25	3
26	8
27	4
28	9
29	3
30	14
31	1
32	16
33	3
34	6
35	4
36	15
37	2
38	8
39	2
40	21
41	2
42	13
43	2
44	13
45	8
46	6
47	2
48	23
49	4

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	3
7	1
8	5
9	2
10	5
11	2
12	5
13	1
14	6
15	4
16	9
17	2
18	7
19	1
20	11
21	2
22	6
23	3
24	11
25	3
26	8
27	4
28	9
29	3
30	14
31	1
32	16
33	3
34	6
35	4
36	15
37	2
38	8
39	2
40	21
41	2
42	13
43	2
44	13
45	8
46	6
47	2
48	23
49	4

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	3
7	1
8	5
9	2
10	5
11	2
12	5
13	1
14	6
15	4
16	9
17	2
18	7
19	1
20	11
21	2
22	6
23	3
24	11
25	3
26	8
27	4
28	9
29	3
30	14
31	1
32	16
33	3
34	6
35	4
36	15
37	2
38	8
39	2
40	21
41	2
42	13
43	2
44	13
45	8
46	6
47	2
48	23
49	4