A031422 - cp's OEIS frontend

A031422 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 9.

n	a(n)
1	601
2	1073
3	1930
4	2017
5	2621
6	2825
7	3037
8	3533
9	3769
10	4013
11	4714
12	5701
13	6218
14	6373
15	6689
16	7013
17	7757
18	8461
19	8825
20	9197
21	9277
22	12629
23	13394
24	13621
25	14081
26	14549
27	15613
28	15754
29	18265
30	18797
31	20005
32	20282
33	20441
34	21410
35	22277
36	22993
37	23762
38	24065
39	24370
40	25114

[601, 1073, 1930, 2017, 2621, 2825, 3037, 3533, 3769, 4013, 4714, 5701, 6218, 6373, 6689, 7013, 7757, 8461, 8825, 9197, 9277, 12629, 13394, 13621, 14081, 14549, 15613, 15754, 18265, 18797, 20005, 20282, 20441, 21410, 22277, 22993, 23762, 24065, 24370, 25114]

cp's OEIS Frontend

A031422 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 9.

Table of values

List of values