A204993 - cp's OEIS frontend

A204993 Negative of the discriminant of quadratic field Q(sqrt(-n)).

n	a(n)
1	4
2	8
3	3
4	4
5	20
6	24
7	7
8	8
9	4
10	40
11	11
12	3
13	52
14	56
15	15
16	4
17	68
18	8
19	19
20	20
21	84
22	88
23	23
24	24
25	4
26	104
27	3
28	7
29	116
30	120
31	31
32	8
33	132
34	136
35	35
36	4
37	148
38	152
39	39
40	40
41	164
42	168
43	43
44	11
45	20
46	184
47	47
48	3
49	4
50	8
51	51
52	52
53	212
54	24
55	55
56	56
57	228
58	232
59	59
60	15
61	244
62	248
63	7
64	4
65	260

[4, 8, 3, 4, 20, 24, 7, 8, 4, 40, 11, 3, 52, 56, 15, 4, 68, 8, 19, 20, 84, 88, 23, 24, 4, 104, 3, 7, 116, 120, 31, 8, 132, 136, 35, 4, 148, 152, 39, 40, 164, 168, 43, 11, 20, 184, 47, 3, 4, 8, 51, 52, 212, 24, 55, 56, 228, 232, 59, 15, 244, 248, 7, 4, 260]

cp's OEIS Frontend

A204993 Negative of the discriminant of quadratic field Q(sqrt(-n)).

Table of values

List of values

n	a(n)
1	4
2	8
3	3
4	4
5	20
6	24
7	7
8	8
9	4
10	40
11	11
12	3
13	52
14	56
15	15
16	4
17	68
18	8
19	19
20	20
21	84
22	88
23	23
24	24
25	4
26	104
27	3
28	7
29	116
30	120
31	31
32	8
33	132
34	136
35	35
36	4
37	148
38	152
39	39
40	40
41	164
42	168
43	43
44	11
45	20
46	184
47	47
48	3
49	4
50	8
51	51
52	52
53	212
54	24
55	55
56	56
57	228
58	232
59	59
60	15
61	244
62	248
63	7
64	4
65	260

n	a(n)
1	4
2	8
3	3
4	4
5	20
6	24
7	7
8	8
9	4
10	40
11	11
12	3
13	52
14	56
15	15
16	4
17	68
18	8
19	19
20	20
21	84
22	88
23	23
24	24
25	4
26	104
27	3
28	7
29	116
30	120
31	31
32	8
33	132
34	136
35	35
36	4
37	148
38	152
39	39
40	40
41	164
42	168
43	43
44	11
45	20
46	184
47	47
48	3
49	4
50	8
51	51
52	52
53	212
54	24
55	55
56	56
57	228
58	232
59	59
60	15
61	244
62	248
63	7
64	4
65	260

n	a(n)
1	4
2	8
3	3
4	4
5	20
6	24
7	7
8	8
9	4
10	40
11	11
12	3
13	52
14	56
15	15
16	4
17	68
18	8
19	19
20	20
21	84
22	88
23	23
24	24
25	4
26	104
27	3
28	7
29	116
30	120
31	31
32	8
33	132
34	136
35	35
36	4
37	148
38	152
39	39
40	40
41	164
42	168
43	43
44	11
45	20
46	184
47	47
48	3
49	4
50	8
51	51
52	52
53	212
54	24
55	55
56	56
57	228
58	232
59	59
60	15
61	244
62	248
63	7
64	4
65	260