A038541 - cp's OEIS frontend

A038541 a(n) = number of modules with n elements over the ring of integers in the imaginary quadratic field of discriminant -20.

n	a(n)
1	1
2	1
3	2
4	2
5	1
6	2
7	2
8	3
9	5
10	1
11	0
12	4
13	0
14	2
15	2
16	5
17	0
18	5
19	0
20	2
21	4
22	0
23	2
24	6
25	2
26	0
27	10
28	4
29	2
30	2
31	0
32	7
33	0
34	0
35	2
36	10
37	0
38	0
39	0
40	3
41	2
42	4
43	2
44	0
45	5
46	2
47	2
48	10
49	5
50	2
51	0
52	0
53	0
54	10
55	0
56	6
57	0
58	2
59	0
60	4
61	2
62	0
63	10
64	11
65	0
66	0
67	2
68	0
69	4
70	2
71	0
72	15
73	0
74	0
75	4
76	0
77	0
78	0
79	0
80	5
81	20
82	2
83	2
84	8
85	0
86	2
87	4
88	0
89	2
90	5
91	0
92	4
93	0
94	2
95	0
96	14

[1, 1, 2, 2, 1, 2, 2, 3, 5, 1, 0, 4, 0, 2, 2, 5, 0, 5, 0, 2, 4, 0, 2, 6, 2, 0, 10, 4, 2, 2, 0, 7, 0, 0, 2, 10, 0, 0, 0, 3, 2, 4, 2, 0, 5, 2, 2, 10, 5, 2, 0, 0, 0, 10, 0, 6, 0, 2, 0, 4, 2, 0, 10, 11, 0, 0, 2, 0, 4, 2, 0, 15, 0, 0, 4, 0, 0, 0, 0, 5, 20, 2, 2, 8, 0, 2, 4, 0, 2, 5, 0, 4, 0, 2, 0, 14]

cp's OEIS Frontend

A038541 a(n) = number of modules with n elements over the ring of integers in the imaginary quadratic field of discriminant -20.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	1
6	2
7	2
8	3
9	5
10	1
11	0
12	4
13	0
14	2
15	2
16	5
17	0
18	5
19	0
20	2
21	4
22	0
23	2
24	6
25	2
26	0
27	10
28	4
29	2
30	2
31	0
32	7
33	0
34	0
35	2
36	10
37	0
38	0
39	0
40	3
41	2
42	4
43	2
44	0
45	5
46	2
47	2
48	10
49	5
50	2
51	0
52	0
53	0
54	10
55	0
56	6
57	0
58	2
59	0
60	4
61	2
62	0
63	10
64	11
65	0
66	0
67	2
68	0
69	4
70	2
71	0
72	15
73	0
74	0
75	4
76	0
77	0
78	0
79	0
80	5
81	20
82	2
83	2
84	8
85	0
86	2
87	4
88	0
89	2
90	5
91	0
92	4
93	0
94	2
95	0
96	14

n	a(n)
1	1
2	1
3	2
4	2
5	1
6	2
7	2
8	3
9	5
10	1
11	0
12	4
13	0
14	2
15	2
16	5
17	0
18	5
19	0
20	2
21	4
22	0
23	2
24	6
25	2
26	0
27	10
28	4
29	2
30	2
31	0
32	7
33	0
34	0
35	2
36	10
37	0
38	0
39	0
40	3
41	2
42	4
43	2
44	0
45	5
46	2
47	2
48	10
49	5
50	2
51	0
52	0
53	0
54	10
55	0
56	6
57	0
58	2
59	0
60	4
61	2
62	0
63	10
64	11
65	0
66	0
67	2
68	0
69	4
70	2
71	0
72	15
73	0
74	0
75	4
76	0
77	0
78	0
79	0
80	5
81	20
82	2
83	2
84	8
85	0
86	2
87	4
88	0
89	2
90	5
91	0
92	4
93	0
94	2
95	0
96	14

n	a(n)
1	1
2	1
3	2
4	2
5	1
6	2
7	2
8	3
9	5
10	1
11	0
12	4
13	0
14	2
15	2
16	5
17	0
18	5
19	0
20	2
21	4
22	0
23	2
24	6
25	2
26	0
27	10
28	4
29	2
30	2
31	0
32	7
33	0
34	0
35	2
36	10
37	0
38	0
39	0
40	3
41	2
42	4
43	2
44	0
45	5
46	2
47	2
48	10
49	5
50	2
51	0
52	0
53	0
54	10
55	0
56	6
57	0
58	2
59	0
60	4
61	2
62	0
63	10
64	11
65	0
66	0
67	2
68	0
69	4
70	2
71	0
72	15
73	0
74	0
75	4
76	0
77	0
78	0
79	0
80	5
81	20
82	2
83	2
84	8
85	0
86	2
87	4
88	0
89	2
90	5
91	0
92	4
93	0
94	2
95	0
96	14