A238304 - cp's OEIS frontend

A238304 Number of monic quartic polynomials with coefficients from {1..n} and maximum coefficient equal to n, for which all four roots are integers.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	1
10	0
11	0
12	1
13	1
14	0
15	1
16	0
17	1
18	1
19	0
20	1
21	1
22	1
23	0
24	2
25	0
26	0
27	2
28	1
29	0
30	1
31	1
32	2
33	1
34	0
35	0
36	2
37	1
38	1
39	2
40	1
41	0
42	2
43	0
44	2
45	2
46	0
47	1
48	1
49	1
50	1
51	1
52	3
53	0
54	2
55	0
56	1
57	2
58	1
59	1
60	4
61	1
62	1
63	1
64	1
65	0
66	2
67	2
68	2
69	2
70	0
71	1
72	3
73	1
74	0
75	1
76	3
77	1
78	2
79	0
80	2
81	2
82	2
83	1
84	4
85	1
86	0
87	3
88	1
89	0
90	1
91	0
92	5
93	2
94	3
95	1
96	2
97	2
98	0
99	2
100	1
101	1
102	3
103	1
104	2
105	2
106	1
107	2
108	5

[0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 2, 0, 0, 2, 1, 0, 1, 1, 2, 1, 0, 0, 2, 1, 1, 2, 1, 0, 2, 0, 2, 2, 0, 1, 1, 1, 1, 1, 3, 0, 2, 0, 1, 2, 1, 1, 4, 1, 1, 1, 1, 0, 2, 2, 2, 2, 0, 1, 3, 1, 0, 1, 3, 1, 2, 0, 2, 2, 2, 1, 4, 1, 0, 3, 1, 0, 1, 0, 5, 2, 3, 1, 2, 2, 0, 2, 1, 1, 3, 1, 2, 2, 1, 2, 5]

cp's OEIS Frontend

A238304 Number of monic quartic polynomials with coefficients from {1..n} and maximum coefficient equal to n, for which all four roots are integers.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	1
10	0
11	0
12	1
13	1
14	0
15	1
16	0
17	1
18	1
19	0
20	1
21	1
22	1
23	0
24	2
25	0
26	0
27	2
28	1
29	0
30	1
31	1
32	2
33	1
34	0
35	0
36	2
37	1
38	1
39	2
40	1
41	0
42	2
43	0
44	2
45	2
46	0
47	1
48	1
49	1
50	1
51	1
52	3
53	0
54	2
55	0
56	1
57	2
58	1
59	1
60	4
61	1
62	1
63	1
64	1
65	0
66	2
67	2
68	2
69	2
70	0
71	1
72	3
73	1
74	0
75	1
76	3
77	1
78	2
79	0
80	2
81	2
82	2
83	1
84	4
85	1
86	0
87	3
88	1
89	0
90	1
91	0
92	5
93	2
94	3
95	1
96	2
97	2
98	0
99	2
100	1
101	1
102	3
103	1
104	2
105	2
106	1
107	2
108	5

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	1
10	0
11	0
12	1
13	1
14	0
15	1
16	0
17	1
18	1
19	0
20	1
21	1
22	1
23	0
24	2
25	0
26	0
27	2
28	1
29	0
30	1
31	1
32	2
33	1
34	0
35	0
36	2
37	1
38	1
39	2
40	1
41	0
42	2
43	0
44	2
45	2
46	0
47	1
48	1
49	1
50	1
51	1
52	3
53	0
54	2
55	0
56	1
57	2
58	1
59	1
60	4
61	1
62	1
63	1
64	1
65	0
66	2
67	2
68	2
69	2
70	0
71	1
72	3
73	1
74	0
75	1
76	3
77	1
78	2
79	0
80	2
81	2
82	2
83	1
84	4
85	1
86	0
87	3
88	1
89	0
90	1
91	0
92	5
93	2
94	3
95	1
96	2
97	2
98	0
99	2
100	1
101	1
102	3
103	1
104	2
105	2
106	1
107	2
108	5

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	1
10	0
11	0
12	1
13	1
14	0
15	1
16	0
17	1
18	1
19	0
20	1
21	1
22	1
23	0
24	2
25	0
26	0
27	2
28	1
29	0
30	1
31	1
32	2
33	1
34	0
35	0
36	2
37	1
38	1
39	2
40	1
41	0
42	2
43	0
44	2
45	2
46	0
47	1
48	1
49	1
50	1
51	1
52	3
53	0
54	2
55	0
56	1
57	2
58	1
59	1
60	4
61	1
62	1
63	1
64	1
65	0
66	2
67	2
68	2
69	2
70	0
71	1
72	3
73	1
74	0
75	1
76	3
77	1
78	2
79	0
80	2
81	2
82	2
83	1
84	4
85	1
86	0
87	3
88	1
89	0
90	1
91	0
92	5
93	2
94	3
95	1
96	2
97	2
98	0
99	2
100	1
101	1
102	3
103	1
104	2
105	2
106	1
107	2
108	5