A316157 - cp's OEIS frontend

A316157 Positive integers Q such that there is a cubic x^3 - Qx + R that has three real roots whose continued fraction expansion have common tails.

n	a(n)
1	3
2	7
3	9
4	21
5	21
6	39
7	61
8	63
9	93
10	129
11	169
12	171
13	219
14	273
15	331
16	333
17	399
18	471
19	547
20	549
21	633
22	723
23	817
24	819
25	921
26	1029
27	1141
28	1143
29	1263
30	1389
31	1519
32	1521
33	1659
34	1803
35	1951
36	1953
37	2109
38	2271
39	2437
40	2439
41	2613
42	2793
43	2977
44	2979
45	3171
46	3369
47	3571
48	3573
49	3783
50	3999
51	4219
52	4221
53	4449
54	4683
55	4921
56	4923

[3, 7, 9, 21, 21, 39, 61, 63, 93, 129, 169, 171, 219, 273, 331, 333, 399, 471, 547, 549, 633, 723, 817, 819, 921, 1029, 1141, 1143, 1263, 1389, 1519, 1521, 1659, 1803, 1951, 1953, 2109, 2271, 2437, 2439, 2613, 2793, 2977, 2979, 3171, 3369, 3571, 3573, 3783, 3999, 4219, 4221, 4449, 4683, 4921, 4923]

cp's OEIS Frontend

A316157 Positive integers Q such that there is a cubic x^3 - Qx + R that has three real roots whose continued fraction expansion have common tails.

Table of values

List of values