A031603 - cp's OEIS frontend

A031603 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 15.

n	a(n)
1	2858
2	3074
3	5122
4	7177
5	7517
6	9773
7	10169
8	13681
9	14149
10	16673
11	17189
12	17713
13	17978
14	18514
15	20525
16	21097
17	22265
18	22861
19	26041
20	27337
21	27997
22	30113
23	32213
24	33653
25	35594
26	35969
27	37489
28	37874
29	38261
30	39041
31	39434
32	39829
33	45673
34	52825
35	54785
36	55717

[2858, 3074, 5122, 7177, 7517, 9773, 10169, 13681, 14149, 16673, 17189, 17713, 17978, 18514, 20525, 21097, 22265, 22861, 26041, 27337, 27997, 30113, 32213, 33653, 35594, 35969, 37489, 37874, 38261, 39041, 39434, 39829, 45673, 52825, 54785, 55717]

cp's OEIS Frontend

A031603 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 15.

Table of values

List of values